svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.api / src / main / java / org / gvsig / fmap / dal / feature / FeatureStore.java @ 40435
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1 | 40435 | jjdelcerro | package org.gvsig.fmap.dal.feature; |
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2 | |||
3 | import java.util.Iterator; |
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4 | import java.util.List; |
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5 | |||
6 | import org.cresques.cts.IProjection; |
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7 | |||
8 | import org.gvsig.fmap.dal.DataServerExplorer; |
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9 | import org.gvsig.fmap.dal.DataStore; |
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10 | import org.gvsig.fmap.dal.DataStoreParameters; |
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11 | import org.gvsig.fmap.dal.exception.DataException; |
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12 | import org.gvsig.fmap.dal.exception.ReadException; |
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13 | import org.gvsig.fmap.dal.feature.exception.FeatureIndexException; |
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14 | import org.gvsig.fmap.dal.feature.exception.NeedEditingModeException; |
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15 | import org.gvsig.fmap.geom.Geometry; |
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16 | import org.gvsig.fmap.geom.primitive.Envelope; |
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17 | import org.gvsig.tools.dispose.DisposableIterator; |
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18 | import org.gvsig.tools.dynobject.DynObject; |
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19 | import org.gvsig.tools.lang.Cloneable; |
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20 | import org.gvsig.tools.observer.Observer; |
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21 | import org.gvsig.tools.undo.UndoRedoStack; |
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22 | |||
23 | /**
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24 | * <p>
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25 | * A FeatureStore is a type of store whose data consists on sets of
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26 | * {@link Feature}(s). {@link Feature}(s) from the same FeatureStore can be of
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27 | * different {@link FeatureType}(s) (as in GML format for instance).
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28 | * </p>
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29 | *
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30 | * <p>
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31 | * FeatureStore allows:
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32 | * </p>
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33 | * <ul>
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34 | * <li>Obtaining the default {@link FeatureType}. A FeatureStore always has one
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35 | * and only one default FeatureType.
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36 | * <li>Obtaining the list of {@link FeatureType}(s) defined in the FeatureStore.
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37 | * <li>Obtaining, filtering and sorting subsets of data ({@link FeatureSet})
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38 | * through {@link FeatureQuery}, as well as background loading.
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39 | * <li>Obtaining the total {@link Envelope} (AKA bounding box or extent) of the
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40 | * store.
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41 | * <li>Support for editing {@link FeatureType}(s).
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42 | * <li>Obtaining information about contained {@link Geometry} types.
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43 | * <li>Exporting to another store.
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44 | * <li>Indexing.
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45 | * <li>Selection.
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46 | * <li>Locks management.
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47 | * </ul>
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48 | *
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49 | */
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50 | public interface FeatureStore extends DataStore, UndoRedoStack, Cloneable { |
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51 | |||
52 | public static final String METADATA_DEFINITION_NAME = "FeatureStore"; |
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53 | |||
54 | /** Indicates that this store is in query mode */
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55 | final static int MODE_QUERY = 0; |
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56 | |||
57 | /** Indicates that this store is in full edit mode */
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58 | final static int MODE_FULLEDIT = 1; |
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59 | |||
60 | /** Indicates that this store is in append mode */
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61 | final static int MODE_APPEND = 2; |
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62 | |||
63 | /*
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64 | * =============================================================
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65 | *
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66 | * information related services
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67 | */
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68 | |||
69 | /**
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70 | * Indicates whether this store allows writing.
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71 | *
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72 | * @return
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73 | * true if this store can be written, false if not.
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74 | */
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75 | public boolean allowWrite(); |
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76 | |||
77 | /**
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78 | * Returns this store's default {@link FeatureType}.
|
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79 | *
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80 | * @return
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81 | * this store's default {@link FeatureType}.
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82 | *
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83 | * @throws DataException
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84 | */
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85 | public FeatureType getDefaultFeatureType() throws DataException; |
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86 | |||
87 | /**
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88 | * Returns this store's featureType {@link FeatureType} matches with
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89 | * featureTypeId.
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90 | *
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91 | * @param featureTypeId
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92 | *
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93 | * @return this store's default {@link FeatureType}.
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94 | *
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95 | * @throws DataException
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96 | */
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97 | public FeatureType getFeatureType(String featureTypeId) |
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98 | throws DataException;
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99 | |||
100 | /**
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101 | * Returns this store's {@link FeatureType}(s).
|
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102 | *
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103 | * @return a list with this store's {@link FeatureType}(s).
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104 | *
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105 | * @throws DataException
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106 | */
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107 | public List getFeatureTypes() throws DataException; |
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108 | |||
109 | /**
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110 | * Returns this store's parameters.
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111 | *
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112 | * @return
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113 | * {@link DataStoreParameters} containing this store's parameters
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114 | */
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115 | public DataStoreParameters getParameters();
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116 | |||
117 | /**
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118 | *@throws DataException
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119 | * @deprecated Mirar de cambiarlo a metadatos
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120 | */
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121 | public boolean canWriteGeometry(int gvSIGgeometryType) throws DataException; |
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122 | |||
123 | /**
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124 | * Returns this store's total envelope (extent).
|
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125 | *
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126 | * @return this store's total envelope (extent) or <code>null</code> if
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127 | * store not have geometry information
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128 | */
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129 | public Envelope getEnvelope() throws DataException; |
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130 | |||
131 | /**
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132 | *
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133 | * @deprecated use getDefaultFeatureType().getDefaultSRS()
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134 | * @return
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135 | * @throws DataException
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136 | */
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137 | public IProjection getSRSDefaultGeometry() throws DataException; |
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138 | |||
139 | /**
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140 | * Exports this store to another store.
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141 | *
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142 | * @param explorer
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143 | * {@link DataServerExplorer} target
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144 | * @param params
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145 | * New parameters of this store that will be used on the target
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146 | * explorer
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147 | *
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148 | * @throws DataException
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149 | *
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150 | * @Deprecated this method is unstable
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151 | */
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152 | public void export(DataServerExplorer explorer, String provider, |
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153 | NewFeatureStoreParameters params) throws DataException;
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154 | |||
155 | /*
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156 | * =============================================================
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157 | *
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158 | * Query related services
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159 | */
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160 | |||
161 | /**
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162 | * Returns all available features in the store.
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163 | * <p>
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164 | * <em>
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165 | * <strong>NOTE:</strong> if you use this method to get a
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166 | * {@link FeatureSet}, you must get sure it is disposed
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167 | * (@see {@link DisposableIterator#dispose()}) in any case, even if an
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168 | * error occurs while getting the data. It is recommended to use the
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169 | * <code>accept</code> methods instead, which handle everything for you.
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170 | * Take into account the accept methods may use a fast iterator to
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171 | * get the features.
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172 | * </em>
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173 | * </p>
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174 | *
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175 | * @see #accept(org.gvsig.tools.visitor.Visitor)
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176 | *
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177 | * @return a collection of features
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178 | * @throws ReadException
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179 | * if there is any error while reading the features
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180 | */
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181 | FeatureSet getFeatureSet() throws DataException;
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182 | |||
183 | /**
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184 | * Returns a subset of features taking into account the properties and
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185 | * restrictions of the FeatureQuery.
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186 | * <p>
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187 | * <em>
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188 | * <strong>NOTE:</strong> if you use this method to get a
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189 | * {@link FeatureSet}, you must get sure it is disposed
|
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190 | * (@see {@link DisposableIterator#dispose()}) in any case, even if an
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191 | * error occurs while getting the data. It is recommended to use the
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192 | * <code>accept</code> methods instead, which handle everything for you.
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193 | * Take into account the accept methods may use a fast iterator to
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194 | * get the features.
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195 | * </em>
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196 | * </p>
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197 | *
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198 | * @see #accept(org.gvsig.tools.visitor.Visitor,
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199 | * org.gvsig.fmap.dal.DataQuery)
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200 | *
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201 | * @param featureQuery
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202 | * defines the characteristics of the features to return
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203 | * @return a collection of features
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204 | * @throws ReadException
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205 | * if there is any error while reading the features
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206 | */
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207 | FeatureSet getFeatureSet(FeatureQuery featureQuery) throws DataException;
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208 | |||
209 | /**
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210 | * Loads a subset of features taking into account the properties and
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211 | * restrictions of the FeatureQuery. Feature loading is performed by calling
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212 | * the Observer, once each loaded Feature.
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213 | *
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214 | * @param featureQuery
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215 | * defines the characteristics of the features to return
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216 | * @param observer
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217 | * to be notified of each loaded Feature
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218 | * @throws DataException
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219 | * if there is any error while loading the features
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220 | */
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221 | void getFeatureSet(FeatureQuery featureQuery, Observer observer) |
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222 | throws DataException;
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223 | |||
224 | /**
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225 | * Loads all available feature in the store. The loading of Features is
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226 | * performed by calling the Observer, once each loaded Feature.
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227 | *
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228 | * @param observer
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229 | * to be notified of each loaded Feature
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230 | * @throws DataException
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231 | * if there is any error while loading the features
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232 | */
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233 | void getFeatureSet(Observer observer) throws DataException; |
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234 | |||
235 | /**
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236 | * Returns the feature given its reference.
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237 | *
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238 | * @param reference
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239 | * a unique FeatureReference
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240 | * @return
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241 | * The Feature
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242 | *
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243 | * @throws DataException
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244 | *
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245 | */
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246 | public Feature getFeatureByReference(FeatureReference reference)
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247 | throws DataException;
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248 | |||
249 | /**
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250 | * Returns the feature given its reference and feature type.
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251 | *
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252 | * @param reference
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253 | * a unique FeatureReference
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254 | *
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255 | * @param featureType
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256 | * FeatureType to which the requested Feature belongs
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257 | *
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258 | * @return
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259 | * The Feature
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260 | *
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261 | * @throws DataException
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262 | *
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263 | */
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264 | public Feature getFeatureByReference(FeatureReference reference,
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265 | FeatureType featureType) throws DataException;
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266 | |||
267 | /*
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268 | * =============================================================
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269 | *
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270 | * Editing related services
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271 | */
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272 | |||
273 | /**
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274 | * Enters editing state.
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275 | */
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276 | public void edit() throws DataException; |
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277 | |||
278 | /**
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279 | * Enters editing state specifying the editing mode.
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280 | *
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281 | * @param mode
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282 | *
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283 | * @throws DataException
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284 | */
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285 | public void edit(int mode) throws DataException; |
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286 | |||
287 | /**
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288 | * Cancels all editing since the last edit().
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289 | *
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290 | * @throws DataException
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291 | */
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292 | public void cancelEditing() throws DataException; |
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293 | |||
294 | /**
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295 | * Exits editing state.
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296 | *
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297 | * @throws DataException
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298 | */
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299 | public void finishEditing() throws DataException; |
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300 | |||
301 | /**
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302 | * Save changes in the provider without leaving the edit mode.
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303 | * Do not call observers to communicate a change of ediding mode.
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304 | * The operation's history is eliminated to prevent inconsistencies
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305 | * in the data.
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306 | *
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307 | * @throws DataException
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308 | */
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309 | public void commitChanges() throws DataException ; |
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310 | |||
311 | /**
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312 | *
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313 | * Returns true if you can call CommitChanges method.
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314 | * If not in editing or changes have been made in the structure
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315 | * return false.
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316 | *
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317 | * @return true if can call commitChanges
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318 | * @throws DataException
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319 | */
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320 | public boolean canCommitChanges() throws DataException; |
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321 | |||
322 | |||
323 | /**
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324 | * Indicates whether this store is in editing state.
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325 | *
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326 | * @return
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327 | * true if this store is in editing state, false if not.
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328 | */
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329 | public boolean isEditing(); |
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330 | |||
331 | /**
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332 | * Indicates whether this store is in appending state. In this state the new
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333 | * features are automatically inserted at the end of the {@link FeatureSet}.
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334 | *
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335 | * @return true if this store is in appending state.
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336 | */
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337 | public boolean isAppending(); |
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338 | |||
339 | /**
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340 | * Updates a {@link FeatureType} in the store with the changes in the
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341 | * {@link EditableFeatureType}.<br>
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342 | *
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343 | * Any {@link FeatureSet} from this store that are used will be invalidated.
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344 | *
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345 | * @param featureType
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346 | * an {@link EditableFeatureType} with the changes.
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347 | *
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348 | * @throws DataException
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349 | */
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350 | public void update(EditableFeatureType featureType) throws DataException; |
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351 | |||
352 | /**
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353 | * Updates a {@link Feature} in the store with the changes in the
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354 | * {@link EditableFeature}.<br>
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355 | *
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356 | * Any {@link FeatureSet} from this store that was still in use will be
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357 | * invalidated. You can override this using
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358 | * {@link FeatureSet#update(EditableFeature)}.
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359 | *
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360 | * @param feature
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361 | * the feature to be updated
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362 | *
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363 | * @throws DataException
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364 | */
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365 | public void update(EditableFeature feature) throws DataException; |
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366 | |||
367 | /**
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368 | * Deletes a {@link Feature} from the store.<br>
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369 | *
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370 | * Any {@link FeatureSet} from this store that was still in use will be
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371 | * invalidated. You can override this using {@link Iterator#remove()} from
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372 | * {@link FeatureSet}.
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373 | *
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374 | * @param feature
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375 | * The feature to be deleted.
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376 | *
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377 | * @throws DataException
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378 | */
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379 | public void delete(Feature feature) throws DataException; |
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380 | |||
381 | /**
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382 | * Inserts a {@link Feature} in the store.<br>
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383 | *
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384 | * Any {@link FeatureSet} from this store that was still in use will be
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385 | * invalidated. You can override this using
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386 | * {@link FeatureSet#insert(EditableFeature)}.
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387 | *
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388 | * @param feature
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389 | * The feature to be inserted
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390 | *
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391 | * @throws DataException
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392 | */
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393 | public void insert(EditableFeature feature) throws DataException; |
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394 | |||
395 | /**
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396 | * Creates a new feature using the default feature type and returns it as an
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397 | * {@link EditableFeature}
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398 | *
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399 | * @return a new feature in editable state
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400 | *
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401 | * @throws DataException
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402 | */
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403 | public EditableFeature createNewFeature() throws DataException; |
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404 | |||
405 | /**
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406 | * Creates a new feature of the given {@link FeatureType} and uses the given
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407 | * {@link Feature} as default values to initialize it.
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408 | *
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409 | * @param type
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410 | * the new feature's feature type
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411 | *
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412 | * @param defaultValues
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413 | * a feature whose values are used as default values for the new
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414 | * feature.
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415 | *
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416 | * @return the new feature.
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417 | *
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418 | * @throws DataException
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419 | */
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420 | public EditableFeature createNewFeature(FeatureType type,
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421 | Feature defaultValues) throws DataException;
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422 | |||
423 | /**
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424 | * Creates a new feature of the given {@link FeatureType}. The flag
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425 | * defaultValues is used to indicate whether the new feature should be
|
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426 | * initialized with default values or not.
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427 | *
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428 | * @param type
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429 | * the new feature's feature type
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430 | *
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431 | * @param defaultValues
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432 | * if true the new feature is initialized with each attribute's
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433 | * default value.
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434 | *
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435 | * @return
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436 | * the new feature
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437 | *
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438 | * @throws DataException
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439 | */
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440 | public EditableFeature createNewFeature(FeatureType type,
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441 | boolean defaultValues) throws DataException; |
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442 | |||
443 | /**
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444 | * Creates a new feature of default {@link FeatureType}. The flag
|
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445 | * defaultValues is used to indicate whether the new feature should be
|
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446 | * initialized with default values or not.
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447 | *
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448 | * @param defaultValues
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449 | * if true the new feature is initialized with each attribute's
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450 | * default value.
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451 | *
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452 | * @return
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453 | * the new feature
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454 | *
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455 | * @throws DataException
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456 | */
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457 | public EditableFeature createNewFeature(boolean defaultValues) |
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458 | throws DataException;
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459 | |||
460 | /**
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461 | * Applies the validation rules associated to the given mode to the active
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462 | * {@link FeatureSet}.
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463 | *
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464 | * @param mode
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465 | * can be one of {MODE_QUERY, MODE_FULLEDIT, MODE_APPEND}
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466 | *
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467 | * @throws DataException
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468 | */
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469 | public void validateFeatures(int mode) throws DataException; |
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470 | |||
471 | /**
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472 | * Indicates whether this store supports append mode.
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473 | *
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474 | * @return
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475 | * true if this store supports append mode.
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476 | */
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477 | public boolean isAppendModeSupported(); |
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478 | |||
479 | /**
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480 | * Initiates an editing group. This is typically used to group series of
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481 | * store editing operations.
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482 | *
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483 | * @param description
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484 | * Description of the editing group.
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485 | *
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486 | * @throws NeedEditingModeException
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487 | */
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488 | public void beginEditingGroup(String description) |
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489 | throws NeedEditingModeException;
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490 | |||
491 | /**
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492 | * Finishes an editing group.
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493 | *
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494 | * @throws NeedEditingModeException
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495 | */
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496 | public void endEditingGroup() throws NeedEditingModeException; |
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497 | |||
498 | /*
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499 | * =============================================================
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500 | *
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501 | * Index related services
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502 | */
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503 | |||
504 | /**
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505 | * Creates an index which will be applied to the features of the given type,
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506 | * by using the data of the given attribute.
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507 | *
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508 | * @param featureType
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509 | * The FeatureType to which the indexed attribute belongs.
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510 | *
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511 | * @param attributeName
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512 | * The name of the attributed to be indexed
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513 | *
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514 | * @param indexName
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515 | * The index name
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516 | *
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517 | * @return the resulting {@link FeatureIndex}
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518 | *
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519 | *
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520 | * @throws FeatureIndexException
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521 | * if there is an error creating the index
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522 | */
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523 | public FeatureIndex createIndex(FeatureType featureType,
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524 | String attributeName, String indexName) throws DataException; |
||
525 | |||
526 | /**
|
||
527 | * Creates an index which will be applied to the features of the given type,
|
||
528 | * by using the data of the given attribute.
|
||
529 | *
|
||
530 | * @param indexTypeName
|
||
531 | * the type of the index to be created. That name is
|
||
532 | * related to one of the registered index providers
|
||
533 | * @param featureType
|
||
534 | * The FeatureType to which the indexed attribute belongs.
|
||
535 | *
|
||
536 | * @param attributeName
|
||
537 | * The name of the attributed to be indexed
|
||
538 | *
|
||
539 | * @param indexName
|
||
540 | * The index name
|
||
541 | *
|
||
542 | * @return the resulting {@link FeatureIndex}
|
||
543 | *
|
||
544 | *
|
||
545 | * @throws FeatureIndexException
|
||
546 | * if there is an error creating the index
|
||
547 | */
|
||
548 | public FeatureIndex createIndex(String indexTypeName, |
||
549 | FeatureType featureType, String attributeName, String indexName) |
||
550 | throws DataException;
|
||
551 | |||
552 | /**
|
||
553 | * Creates an index which will be applied to the features of the given type,
|
||
554 | * by using the data of the given attribute. This method will return without
|
||
555 | * waiting for the index to be filled, as that will be performed in
|
||
556 | * background. An optional {@link Observer} parameter is provided to be
|
||
557 | * notified ( {@link FeatureStoreNotification#INDEX_FILLING_SUCCESS} )
|
||
558 | * when the index has finished filling with data and is available to be
|
||
559 | * used.
|
||
560 | *
|
||
561 | * @param featureType
|
||
562 | * The FeatureType to which the indexed attribute belongs.
|
||
563 | *
|
||
564 | * @param attributeName
|
||
565 | * The name of the attributed to be indexed
|
||
566 | *
|
||
567 | * @param indexName
|
||
568 | * The index name
|
||
569 | *
|
||
570 | * @param observer
|
||
571 | * to notify to when the created index has finished filling
|
||
572 | * with data and is available to be used. The observer will
|
||
573 | * receive then a
|
||
574 | * {@link FeatureStoreNotification#INDEX_FILLING_SUCCESS}
|
||
575 | * notification, with the index object if it has finished
|
||
576 | * successfully, or a
|
||
577 | * {@link FeatureStoreNotification#INDEX_FILLING_ERROR}
|
||
578 | * notification with the exception object if there has been
|
||
579 | * any error in the process. Optional.
|
||
580 | *
|
||
581 | * @return the resulting {@link FeatureIndex}
|
||
582 | *
|
||
583 | * @see FeatureStoreNotification#INDEX_FILLING_STARTED
|
||
584 | * @see FeatureStoreNotification#INDEX_FILLING_SUCCESS
|
||
585 | * @see FeatureStoreNotification#INDEX_FILLING_CANCELLED
|
||
586 | * @see FeatureStoreNotification#INDEX_FILLING_ERROR
|
||
587 | *
|
||
588 | * @throws FeatureIndexException
|
||
589 | * if there is an error creating the index
|
||
590 | */
|
||
591 | public FeatureIndex createIndex(FeatureType featureType,
|
||
592 | String attributeName, String indexName, Observer observer) |
||
593 | throws DataException;
|
||
594 | |||
595 | /**
|
||
596 | * Creates an index which will be applied to the features of the given type,
|
||
597 | * by using the data of the given attribute. This method will return without
|
||
598 | * waiting for the index to be filled, as that will be performed in
|
||
599 | * background. An optional {@link Observer} parameter is provided to be
|
||
600 | * notified ( {@link FeatureStoreNotification#INDEX_FILLING_SUCCESS} )
|
||
601 | * when the index has finished filling with data and is available to be
|
||
602 | * used.
|
||
603 | *
|
||
604 | * @param indexTypeName
|
||
605 | * the type of the index to be created. That name is
|
||
606 | * related to one of the registered index providers
|
||
607 | * @param featureType
|
||
608 | * The FeatureType to which the indexed attribute belongs.
|
||
609 | *
|
||
610 | * @param attributeName
|
||
611 | * The name of the attributed to be indexed
|
||
612 | *
|
||
613 | * @param indexName
|
||
614 | * The index name
|
||
615 | *
|
||
616 | * @param observer
|
||
617 | * to notify to when the created index has finished filling
|
||
618 | * with data and is available to be used. The observer will
|
||
619 | * receive then a
|
||
620 | * {@link FeatureStoreNotification#INDEX_FILLING_SUCCESS}
|
||
621 | * notification, with the index object if it has finished
|
||
622 | * successfully, or a
|
||
623 | * {@link FeatureStoreNotification#INDEX_FILLING_ERROR}
|
||
624 | * notification with the exception object if there has been
|
||
625 | * any error in the process. Optional.
|
||
626 | *
|
||
627 | * @return the resulting {@link FeatureIndex}
|
||
628 | *
|
||
629 | * @see FeatureStoreNotification#INDEX_FILLING_STARTED
|
||
630 | * @see FeatureStoreNotification#INDEX_FILLING_SUCCESS
|
||
631 | * @see FeatureStoreNotification#INDEX_FILLING_CANCELLED
|
||
632 | * @see FeatureStoreNotification#INDEX_FILLING_ERROR
|
||
633 | *
|
||
634 | * @throws FeatureIndexException
|
||
635 | * if there is an error creating the index
|
||
636 | */
|
||
637 | public FeatureIndex createIndex(String indexTypeName, |
||
638 | FeatureType featureType, String attributeName, String indexName, |
||
639 | Observer observer) throws DataException; |
||
640 | |||
641 | /**
|
||
642 | * Returns a FeatureIndexes structure containing all available indexes in
|
||
643 | * the store.
|
||
644 | *
|
||
645 | * @return
|
||
646 | */
|
||
647 | public FeatureIndexes getIndexes();
|
||
648 | |||
649 | /*
|
||
650 | * =============================================================
|
||
651 | *
|
||
652 | * Selection related services
|
||
653 | */
|
||
654 | |||
655 | /**
|
||
656 | * Sets the selection to the passed {@link FeatureSet}
|
||
657 | *
|
||
658 | * @param selection
|
||
659 | * A {@link FeatureSet} with the requested selection
|
||
660 | */
|
||
661 | public void setSelection(FeatureSet selection) throws DataException; |
||
662 | |||
663 | /**
|
||
664 | * Creates a {@link FeatureSelection}
|
||
665 | *
|
||
666 | * @return
|
||
667 | * a {@link FeatureSelection}
|
||
668 | *
|
||
669 | * @throws DataException
|
||
670 | */
|
||
671 | public FeatureSelection createFeatureSelection() throws DataException; |
||
672 | |||
673 | /**
|
||
674 | * Returns the current {@link FeatureSelection}.
|
||
675 | * Create a empty selection if not exits.
|
||
676 | *
|
||
677 | * @return
|
||
678 | * current {@link FeatureSelection}.
|
||
679 | *
|
||
680 | * @throws DataException
|
||
681 | */
|
||
682 | public FeatureSelection getFeatureSelection() throws DataException; |
||
683 | |||
684 | /*
|
||
685 | * =============================================================
|
||
686 | *
|
||
687 | * Lock related services
|
||
688 | */
|
||
689 | |||
690 | /**
|
||
691 | * Indicates whether this store supports locks.
|
||
692 | *
|
||
693 | * @return
|
||
694 | * true if this store supports locks, false if not.
|
||
695 | */
|
||
696 | public boolean isLocksSupported(); |
||
697 | |||
698 | /**
|
||
699 | * Returns the set of locked features
|
||
700 | *
|
||
701 | * @return
|
||
702 | * set of locked features
|
||
703 | *
|
||
704 | * @throws DataException
|
||
705 | */
|
||
706 | public FeatureLocks getLocks() throws DataException; |
||
707 | |||
708 | /*
|
||
709 | * =============================================================
|
||
710 | * Transforms related services
|
||
711 | * =============================================================
|
||
712 | */
|
||
713 | |||
714 | /**
|
||
715 | * Returns this store transforms
|
||
716 | *
|
||
717 | * @return
|
||
718 | * this store transforms
|
||
719 | */
|
||
720 | public FeatureStoreTransforms getTransforms();
|
||
721 | |||
722 | /**
|
||
723 | * Returns a new {@link FeatureQuery} associated to this store.
|
||
724 | *
|
||
725 | * @return
|
||
726 | * a new {@link FeatureQuery} associated to this store.
|
||
727 | */
|
||
728 | public FeatureQuery createFeatureQuery();
|
||
729 | |||
730 | /**
|
||
731 | * Returns featue count of this store.
|
||
732 | *
|
||
733 | * @return
|
||
734 | * @throws DataException
|
||
735 | */
|
||
736 | public long getFeatureCount() throws DataException; |
||
737 | |||
738 | /**
|
||
739 | * Creates a vectorial cache that is used to save and retrieve data.
|
||
740 | *
|
||
741 | * @param name
|
||
742 | * the cache name.
|
||
743 | * @param parameters
|
||
744 | * parameters to create the stores used to save data.
|
||
745 | * @throws DataException
|
||
746 | */
|
||
747 | public void createCache(String name, DynObject parameters) |
||
748 | throws DataException;
|
||
749 | |||
750 | /**
|
||
751 | * @return the vectorial cache
|
||
752 | */
|
||
753 | public FeatureCache getCache();
|
||
754 | |||
755 | /**
|
||
756 | * Return if the provider knows the real envelope of a layer. If not,
|
||
757 | * the {@link FeatureStoreProvider#getEnvelope()} method doesn't return
|
||
758 | * the full envelope.
|
||
759 | *
|
||
760 | * @return
|
||
761 | * <true> if it knows the real envelope.
|
||
762 | */
|
||
763 | public boolean isKnownEnvelope(); |
||
764 | |||
765 | /**
|
||
766 | * Return if the maximum number of features provided by the
|
||
767 | * provider are limited.
|
||
768 | *
|
||
769 | * @return
|
||
770 | * <true> if there is a limit of features.
|
||
771 | */
|
||
772 | public boolean hasRetrievedFeaturesLimit(); |
||
773 | |||
774 | /**
|
||
775 | * If the {@link FeatureStoreProvider#hasRetrievedFeaturesLimit()} returns
|
||
776 | * true,
|
||
777 | * it returns the limit of features retrieved from the provider.
|
||
778 | *
|
||
779 | * @return
|
||
780 | * The limit of the retrieved features.
|
||
781 | */
|
||
782 | public int getRetrievedFeaturesLimit(); |
||
783 | } |