Application: gvSIG desktop

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <artifactId>org.gvsig.fmap.dal.db</artifactId>

  <name>${project.artifactId}</name>

  <packaging>pom</packaging>

  <description>This library has the implementation of the provider of te Data Access Library for accesing to database resources, like JDBC, PostgreSQL or H2.</description>

  <parent>

      <groupId>org.gvsig</groupId>

      <artifactId>org.gvsig.fmap.dal</artifactId>

      <version>2.0.237</version>

  </parent>  

  <modules>

    <module>org.gvsig.fmap.dal.db.lib</module>

    <module>org.gvsig.fmap.dal.db.jdbc</module>

    <module>org.gvsig.fmap.dal.db.h2</module>

	<!--

    <module>org.gvsig.fmap.dal.db.mdb</module>

	-->

  </modules>

</project>

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 3

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.dal.store.jdbc;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Iterator;

import java.util.List;

import java.util.NoSuchElementException;

import org.gvsig.fmap.dal.DataTypes;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;

import org.gvsig.fmap.dal.feature.FeatureQuery;

import org.gvsig.fmap.dal.feature.FeatureQueryOrder;

import org.gvsig.fmap.dal.feature.FeatureType;

import org.gvsig.fmap.dal.feature.FeatureQueryOrder.FeatureQueryOrderMember;

import org.gvsig.fmap.dal.feature.spi.AbstractFeatureSetProvider;

import org.gvsig.tools.evaluator.Evaluator;

import org.gvsig.tools.evaluator.EvaluatorFieldValue;

import org.gvsig.tools.evaluator.EvaluatorFieldsInfo;

import org.gvsig.tools.exception.BaseException;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * @author jmvivo

 *

 */

public class JDBCSetProvider extends AbstractFeatureSetProvider {

	final static private Logger logger = LoggerFactory

			.getLogger(JDBCSetProvider.class);

	protected String filter;

	protected String order;

	protected Long size = null;

	protected Boolean isEmpty = null;

	protected List resultSetIDReferenced;

	private JDBCHelper helper = null;

	private int defaultFetchSize = 1000;

	private long limit = -1l;

    private boolean directSQLMode;

	public JDBCSetProvider(JDBCStoreProvider store, FeatureQuery query,

			FeatureType featureType) throws DataException {

		super(store, query, featureType);

		this.helper = store.getHelper();

		this.resultSetIDReferenced = new ArrayList();

		this.directSQLMode =  store.isDirectSQLMode();

		if (query.hasFilter() && this.canFilter()) {

			setFilter(query.getFilter());

		} else {

			setFilter(null);

		}

		if (query.hasOrder() && canOrder()) {

			setOrder(query.getOrder());

		} else {

			setOrder(null);

		}

		if (query != null) {

			limit = query.getLimit();

		}

	}

	/**

	 * @return the defaultFetchSize

	 */

	public int getDefaultFetchSize() {

		return defaultFetchSize;

	}

	/**

	 * @param defaultFetchSize

	 *            the defaultFetchSize to set

	 */

	public void setDefaultFetchSize(int defaultFetchSize) {

		this.defaultFetchSize = defaultFetchSize;

	}

	protected String getSqlForEvaluator(Evaluator filter) {

		if (filter == null) {

			return null;

		}

		EvaluatorFieldsInfo info = filter.getFieldsInfo();

		String filterString = filter.getSQL();

		if (info == null) {

			return filterString;

		}

		String[] filterNames = info.getFieldNames();

		String[] finalNames = new String[filterNames.length];

		EvaluatorFieldValue[] fValues;

		List values = new ArrayList();

		FeatureAttributeDescriptor attr;

		for (int i = 0; i < filterNames.length; i++) {

			attr = getFeatureType().getAttributeDescriptor(filterNames[i]);

			if (attr == null) {

				finalNames[i] = filterNames[i];

				continue;

			}

			finalNames[i] = getEscapedFieldName(attr.getName());

		}

		for (int i = 0; i < filterNames.length; i++) {

			if (!filterNames[i].equals(finalNames[i])) {

				filterString = filterString.replaceAll(

						"\\b" + filterNames[i] + "\\b",

						finalNames[i]);

			}

		}

		return filterString;

	}

	protected String getEscapedFieldName(String fieldName) {

		if (helper == null) {

			helper = getJDBCStoreProvider().getHelper();

		}

		return helper.escapeFieldName(fieldName);

	}

	protected void setOrder(FeatureQueryOrder order) {

		if (order == null || order.size() == 0) {

			this.order = null;

			return;

		}

		StringBuilder buffer = new StringBuilder();

		Iterator iter = order.iterator();

		FeatureQueryOrderMember menber;

		while (true) {

			menber = (FeatureQueryOrderMember) iter.next();

			if (menber.hasEvaluator()) {

				buffer.append(getSqlForEvaluator(menber.getEvaluator()));

			} else {

				buffer.append(getEscapedFieldName(menber.getAttributeName()));

			}

			if (menber.getAscending()) {

				buffer.append(" ASC");

			} else {

				buffer.append(" DESC");

			}

			if (iter.hasNext()) {

				buffer.append(", ");

			} else {

				buffer.append(' ');

				break;

			}

		}

		this.order = buffer.toString();

	}

	protected void setFilter(Evaluator filter) {

		this.filter = getSqlForEvaluator(filter);

	}

	/* (non-Javadoc)

	 * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#canFilter()

	 */

	public boolean canFilter() {

		Evaluator filter = getQuery().getFilter();

		if (directSQLMode){

		    return false;

		}

		if (filter != null) {

			if (filter.getSQL() == null || filter.getSQL().length() == 0) {

				return false;

			} else {

				// TODO Check Geom fields if

				EvaluatorFieldsInfo fInfo = filter.getFieldsInfo();

				if (fInfo == null || fInfo.getFieldNames() == null) {

					return true;

				}

				Iterator names = Arrays.asList(fInfo.getFieldNames())

						.iterator();

				String name;

				int type;

				while (names.hasNext()) {

					name = (String) names.next();

					type =

							this.getFeatureType()

									.getAttributeDescriptor(name)

							.getType();

					if (type == DataTypes.GEOMETRY

							&& !this.helper.supportsGeometry()) {

						return false;

					}

				}

				return true;

			}

		} else{

			return false;

		}

	}

	/* (non-Javadoc)

	 * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#canIterateFromIndex()

	 */

	public boolean canIterateFromIndex() {

		return helper.supportOffset();

	}

	/* (non-Javadoc)

	 * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#canOrder()

	 */

	public boolean canOrder() {

	    if (directSQLMode){

	        return false;

	    }

		// TODO Check Geom fields if postgis not are available

		FeatureQuery query = getQuery();

		if (query.hasOrder()) {

			Iterator iter = query.getOrder().iterator();

			FeatureQueryOrderMember menber;

			String sql;

			while (iter.hasNext()){

				menber = (FeatureQueryOrderMember) iter.next();

				if (menber.hasEvaluator()){

					sql = menber.getEvaluator().getSQL();

					if (sql == null || sql.length() == 0) {

						return false;

					}

				}

			}

		}

		return true;

	}

	private JDBCStoreProvider getJDBCStoreProvider() {

		return (JDBCStoreProvider) getStore();

	}

	@Override

	protected void doDispose() throws BaseException {

		if (resultSetIDReferenced != null) {

			Iterator iter = resultSetIDReferenced.iterator();

			Integer resID;

			while (iter.hasNext()) {

				resID = (Integer) iter.next();

				if (resID != null) {

					logger.warn(

						"ResultSet (ID {}) not closed on dispose, will close",

						resID);

					try {

						getJDBCStoreProvider().closeResulset(resID.intValue());

					} catch (DataException e) {

						logger.error("Close resulset Exception", e);

					}

				}

				iter.remove();

			}

		}

		resultSetIDReferenced = null;

		filter = null;

		order = null;

		size = null;

		isEmpty = null;

	}

	protected String getSQL(long fromIndex) throws DataException {

		return getJDBCStoreProvider().compoundSelect(getFeatureType(), filter,

				order, limit, fromIndex);

	}

	/* (non-Javadoc)

	 * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#getSize()

	 */

	public long getSize() throws DataException {

		if (size == null) {

			size = new Long(getJDBCStoreProvider().getCount(filter));

		}

		return size.longValue();

	}

	/* (non-Javadoc)

	 * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#isEmpty()

	 */

	public boolean isEmpty() throws DataException {

		JDBCStoreProvider store = getJDBCStoreProvider();

		if (isEmpty == null) {

			if (size == null) {

				String sql =

						store.compoundSelect(getFeatureType(), filter, null, 1,

								0);

				int rsID = store.createResultSet(sql, getFetchSize());

				isEmpty = new Boolean(!store.resulsetNext(rsID));

				store.closeResulset(rsID);

			} else {

				isEmpty = new Boolean(size.longValue() < 1);

			}

		}

		return isEmpty.booleanValue();

	}

	protected int getFetchSize() {

		long pageSize = -1;

		if (getQuery() != null) {

			pageSize = getQuery().getPageSize();

			pageSize =

					pageSize > Integer.MAX_VALUE ? Integer.MAX_VALUE : pageSize;

		}

		return (pageSize > 0 ? (int) pageSize : defaultFetchSize);

	}

	protected JDBCIterator createFastIterator(long index) throws DataException {

		if (isEmpty != null && isEmpty.booleanValue()) {

			return new EmptyJDBCIterator(getJDBCStoreProvider());

		}

		int rsID =

				getJDBCStoreProvider().createResultSet(getSQL(index),

						getFetchSize());

		return createDefaultFastIterator(rsID);

	}

	protected JDBCIterator createDefaultFastIterator(int resultSetID)

			throws DataException {

		return new JDBCFastIterator(getJDBCStoreProvider(), this,

				getFeatureType(), resultSetID);

	}

	protected JDBCIterator createIterator(long index) throws DataException {

        if (isEmpty != null && isEmpty.booleanValue()) {

            return new EmptyJDBCIterator(getJDBCStoreProvider());

        }

        int rsID =

                getJDBCStoreProvider().createResultSet(getSQL(index),

                        getFetchSize());

        return createDefaultIterator(rsID);

	}

	protected JDBCIterator createDefaultIterator(int resultSetID)

			throws DataException {

		return new JDBCIterator(getJDBCStoreProvider(), this, getFeatureType(),

				resultSetID);

	}

	public void addResulsetReference(int resulsetID) {

		this.resultSetIDReferenced.add(new Integer(resulsetID));

	}

	public void removeResulsetReference(int resulsetID) {

		this.resultSetIDReferenced.remove(new Integer(resulsetID));

	}

	private class EmptyJDBCIterator extends JDBCIterator {

		protected EmptyJDBCIterator(JDBCStoreProvider store) throws DataException {

			super(store, null, null, -1);

		}

		@Override

		protected boolean internalHasNext() {

			return false;

		}

		@Override

		protected Object internalNext() {

			throw new NoSuchElementException();

		}

		@Override

		protected void doDispose() throws BaseException {

			// nothing to do

		}

	}

}

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 3

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.dal.store.jdbc;

import java.security.InvalidParameterException;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Iterator;

import java.util.List;

import org.cresques.cts.IProjection;

import org.gvsig.fmap.dal.DALLocator;

import org.gvsig.fmap.dal.DataManager;

import org.gvsig.fmap.dal.DataServerExplorer;

import org.gvsig.fmap.dal.DataStore;

import org.gvsig.fmap.dal.DataStoreNotification;

import org.gvsig.fmap.dal.DataTypes;

import org.gvsig.fmap.dal.exception.CloseException;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.exception.InitializeException;

import org.gvsig.fmap.dal.exception.OpenException;

import org.gvsig.fmap.dal.exception.ReadException;

import org.gvsig.fmap.dal.exception.ValidateDataParametersException;

import org.gvsig.fmap.dal.feature.EditableFeatureType;

import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;

import org.gvsig.fmap.dal.feature.FeatureQuery;

import org.gvsig.fmap.dal.feature.FeatureType;

import org.gvsig.fmap.dal.feature.spi.AbstractFeatureStoreProvider;

import org.gvsig.fmap.dal.feature.spi.FeatureProvider;

import org.gvsig.fmap.dal.feature.spi.FeatureReferenceProviderServices;

import org.gvsig.fmap.dal.feature.spi.FeatureSetProvider;

import org.gvsig.fmap.dal.resource.ResourceAction;

import org.gvsig.fmap.dal.resource.exception.ResourceExecuteException;

import org.gvsig.fmap.dal.resource.spi.ResourceProvider;

import org.gvsig.fmap.dal.spi.DataStoreProviderServices;

import org.gvsig.fmap.dal.store.db.DBHelper;

import org.gvsig.fmap.dal.store.db.FeatureTypeHelper;

import org.gvsig.fmap.dal.store.jdbc.exception.InvalidResultSetIdException;

import org.gvsig.fmap.dal.store.jdbc.exception.JDBCException;

import org.gvsig.fmap.dal.store.jdbc.exception.JDBCExecutePreparedSQLException;

import org.gvsig.fmap.dal.store.jdbc.exception.JDBCSQLException;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

import org.gvsig.fmap.geom.primitive.Envelope;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.dynobject.exception.DynFieldNotFoundException;

import org.gvsig.tools.exception.BaseException;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * @author jmvivo

 *

 */

public class JDBCStoreProvider extends AbstractFeatureStoreProvider

		implements JDBCHelperUser {

	final static private Logger logger = LoggerFactory

			.getLogger(JDBCStoreProvider.class);

	private List<ResultSetInfo> resulsetList;

	public static String NAME = "JDBC";

	public static String DESCRIPTION = "JDBC generic store";

	public static final String METADATA_DEFINITION_NAME = NAME;

	private long mlsecondsToZombie = 1000 * 60 * 10; // 10 Min

	protected JDBCHelper helper;

	protected boolean directSQLMode;

	private Long totalCount = null;

	private GeometryManager geomManager = null;

	public JDBCStoreProvider(JDBCStoreParameters params,

			DataStoreProviderServices storeServices) throws InitializeException {

		this(

				params, 

				storeServices,

				DBHelper.newMetadataContainer(METADATA_DEFINITION_NAME)

		);

	}

	protected JDBCStoreProvider(JDBCStoreParameters params,

			DataStoreProviderServices storeServices, DynObject metadata)

			throws InitializeException {

		super(params, storeServices, metadata);

		geomManager = GeometryLocator.getGeometryManager();

		resulsetList = new ArrayList<ResultSetInfo>(10);

		helper = createHelper();

		if (params.getSQL() != null && (params.getSQL()).trim().length() > 0) {

			directSQLMode = true;

		}

		this.initFeatureType();

	}

	public Object getDynValue(String name) throws DynFieldNotFoundException {

		try {

			if( DataStore.METADATA_ENVELOPE.equalsIgnoreCase(name) ) {

				Envelope env = this.getEnvelope();

				if( env != null ) {

					return env;

				}

			} else if( DataStore.METADATA_CRS.equalsIgnoreCase(name) ) {

				IProjection proj;

				proj = this.getFeatureStore().getDefaultFeatureType().getDefaultSRS();

				if( proj != null ) {

					return proj;

				}

			}

		} catch (DataException e) {

			throw new RuntimeException(e);

		}

		return super.getDynValue(name);

	}

	protected JDBCStoreParameters getJDBCParameters() {

		return (JDBCStoreParameters) this.getParameters();

	}

	/**

	 * Load data form a resulset.<br>

	 *

	 * <strong>Note:</strong><br>

	 * this method have to perform <code>resouceBegin</code> at the begining and

	 * <code>resourceEnd</code> at the end of execution.

	 *

	 *

	 * @param data

	 * @param resulsetID

	 *

	 * @return

	 * @throws DataException

	 */

	public void loadFeatureProvider(final FeatureProvider data, final int resultsetID)

			throws DataException {

		getResource().execute(new ResourceAction() {

			public Object run() throws Exception {

				ResultSet rs = getResultSet(resultsetID);

				FeatureAttributeDescriptor attr;

				Iterator<FeatureAttributeDescriptor> iter = FeatureTypeHelper.iterator(data.getType());

				while (iter.hasNext()) {

					attr = iter.next();

					loadFeatureProviderValue(data, rs, attr);

				}

				return null;

			}

                        public String toString() {

                            return "loadFeature";

                        }

		});

	}

	protected void loadFeatureProviderValue(FeatureProvider data, ResultSet rs,

			FeatureAttributeDescriptor attr) throws DataException {

		if (attr.getType() == DataTypes.GEOMETRY) {

			byte[] buffer;

			try {

				buffer = rs.getBytes(attr.getIndex() + 1);

				if (buffer == null) {

					data.set(attr.getIndex(), null);

				} else {

					data.set(attr.getIndex(), this.helper.getGeometry(buffer));

				}

			} catch (SQLException e) {

				throw new JDBCSQLException(e);

			} catch (BaseException e) {

				throw new ReadException(getProviderName(), e);

			}

		} else {

			try {

				data.set(attr.getIndex(), rs.getObject(attr.getIndex() + 1));

			} catch (SQLException e) {

				throw new JDBCSQLException(e);

			}

		}

	}

	public long getTimeToResulSetZombie() {

		return mlsecondsToZombie;

	}

	public void setTimeToResulSetZombie(long mlSeconds) {

		mlsecondsToZombie = mlSeconds;

	}

	private class ResultSetInfo{

		private ResultSet resultSet = null;

		private long lastUse = 0;

		public ResultSetInfo(ResultSet resulSet) {

			this.resultSet = resulSet;

			used();

		}

		private void used() {

			lastUse = System.currentTimeMillis();

		}

		public ResultSet get() {

			used();

			return resultSet;

		}

		public boolean isZombie() {

			return System.currentTimeMillis() - lastUse > mlsecondsToZombie;

		}

	}

	public final int createResultSet(String sql, int fetchSize)

			throws DataException {

        return createResultSet(sql, null, fetchSize);

	}

	public final int createResultSet(final String sql, final Object[] values,

			final int fetchSize)

			throws DataException {

		synchronized (this) {

			checksResulsets();

			return ((Integer) getResource().execute(new ResourceAction() {

				public Object run() throws Exception {

					ResultSetInfo newRs =

							new ResultSetInfo(createNewResultSet(sql, values,

									fetchSize));

					int newId = getNewId();

					if (newId < 0) {

						newId = resulsetList.size();

						resulsetList.add(newRs);

					} else {

						resulsetList.set(newId, newRs);

					}

					logger.debug("Created resultset id: {} (total open: {})",

							newId, getResultsetOpenCount());

					return Integer.valueOf(newId);

				}

			})).intValue();

		}

	}

	private int getNewId() {

		int newId;

		if (resulsetList.size() < 1) {

			return -1;

		}

		for (newId = 0; newId < resulsetList.size(); newId++) {

			if (resulsetList.get(newId) == null) {

				return newId;

			}

		}

		return -1;

	}

	protected final void forceCloseAllResultSet()

			throws ResourceExecuteException,

			JDBCException {

		synchronized (this) {

			// FIXME: Esto no deberia funcionar. 

			Iterator iter = resulsetList.iterator();

			Integer rsID = null;

			while (iter.hasNext()) {

				rsID = (Integer) iter.next();

				if (rsID != null) {

					try {

						forceCloseResultSet(rsID.intValue());

					} catch (InvalidResultSetIdException e) {

						continue;

					}

				}

				iter.remove();

			}

		}

	}

	protected final void forceCloseResultSet(int rsID)

			throws ResourceExecuteException, JDBCException,

			InvalidResultSetIdException {

		logger.warn("Close forced of resultSet ({})", rsID);

		closeResulset(rsID);

	}

	protected final ResultSet getResultSet(int resultsetID)

			throws InvalidResultSetIdException {

		if (resultsetID >= resulsetList.size()) {

			throw new InvalidResultSetIdException(resultsetID);

		}

		ResultSetInfo rsInfo = resulsetList.get(resultsetID);

		if (rsInfo == null) {

			throw new InvalidResultSetIdException(resultsetID);

		}

		return rsInfo.get();

	}

	private ResultSet dropResultSet(int resultsetID)

			throws InvalidResultSetIdException {

		if (resultsetID >= resulsetList.size()) {

			throw new InvalidResultSetIdException(resultsetID);

		}

		ResultSetInfo rsInfo = (ResultSetInfo) resulsetList.get(resultsetID);

		if (rsInfo == null) {

			throw new InvalidResultSetIdException(resultsetID);

		}

		if (resultsetID == resulsetList.size() - 1) {

			resulsetList.remove(resultsetID);

		} else {

			resulsetList.set(resultsetID, null);

		}

		return rsInfo.get();

	}

	public final boolean resulsetNext(final int resultsetID)

			throws JDBCException,

			InvalidResultSetIdException, ResourceExecuteException {

		return ((Boolean) getResource().execute(new ResourceAction() {

			public Object run() throws Exception {

			    boolean bool = getResultSet(resultsetID).next();

				return Boolean.valueOf(bool);

			}

		})).booleanValue();

	}

	public final void closeResulset(final int resultsetID)

			throws JDBCException,

			InvalidResultSetIdException, ResourceExecuteException {

		synchronized (this) {

			getResource().execute(new ResourceAction() {

				public Object run() throws Exception {

					ResultSet rs = dropResultSet(resultsetID);

					closeResulset(rs);

					return null;

				}

			});

			if (logger.isDebugEnabled()) {

				logger.debug(" id: " + resultsetID + " (total "

						+ getResultsetOpenCount() + ")");

			}

			checksResulsets();

		}

	}

	public final void checksResulsets() throws JDBCException,

			InvalidResultSetIdException, ResourceExecuteException {

		synchronized (this) {

			getResource().execute(new ResourceAction() {

				public Object run() throws Exception {

					ResultSetInfo rsInfo;

					for (int i = 0; i < resulsetList.size(); i++) {

						rsInfo = (ResultSetInfo) resulsetList.get(i);

						if (rsInfo == null) {

							continue;

						}

						if (rsInfo.isZombie()) {

							forceCloseResultSet(i);

						}

					}

					return null;

				}

			});

		}

	}

	protected void closeResulset(final ResultSet rs) throws JDBCException,

			ResourceExecuteException {

		getResource().execute(new ResourceAction() {

			public Object run() throws Exception {

				Statement st = rs.getStatement();

				Connection con = st.getConnection();

				try {

					rs.close();

				} finally {

					// TODO revisar esto

					try{ st.close();  } catch (Exception ex){ };

					try{ con.close(); } catch (Exception ex){ };

				}

				return null;

			}

		});

	}

	private int getResultsetOpenCount() {

		int count = 0;

		Iterator<ResultSetInfo> iter = resulsetList.iterator();

		while (iter.hasNext()) {

			if (iter.next() != null) {

				count++;

			}

		}

		return count;

	}

	protected final int openResulsetCount() {

		int count = 0;

		Iterator<ResultSetInfo> iter = resulsetList.iterator();

		while (iter.hasNext()) {

			if (iter.next() != null) {

				count++;

			}

		}

		return count;

	}

	public boolean closeResourceRequested(ResourceProvider resource) {

		try {

			checksResulsets();

			return openResulsetCount() == 0 && closeResource(resource);

		} catch (DataException e) {

			logger.error("Exception throws", e);

			return false;

		}

	}

	protected String fixFilter(String filter) {

		if (filter == null) {

			return null;

		}

		return filter;

	}

	protected JDBCHelper createHelper() throws InitializeException {

		return new JDBCHelper(this, getJDBCParameters());

	}

	protected JDBCHelper getHelper() {

		return helper;

	}

	protected void resetCount() {

		totalCount = null;

	}

	/**

	 * Get feature count for a <code>filter</code>.<br>

	 *

	 * <code>filter</code> can be <code>null</code>.<br>

	 *

	 * <strong>Note:</strong><br>

	 * this method have to perform <code>resouceBegin</code> at the begining and

	 * <code>resourceEnd</code> at the end of execution.

	 *

	 *

	 * @param filter

	 * @return

	 * @throws DataException

	 */

	protected long getCount(String filter)

			throws DataException {

		this.open();

		if (filter == null && totalCount != null) {

			return totalCount.longValue();

		}

		final String sql = compoundCountSelect(filter);

		long count = ((Long) getResource().execute(new ResourceAction() {

			public Object run() throws Exception {

				long count = 0;

				ResultSet rs = createNewResultSet(sql, null, 1);

				try {

					if (rs.next()) {

						count = rs.getLong(1);

					}

				} catch (SQLException e) {

					throw new JDBCSQLException(e);

				} finally {

					closeResulset(rs);

				}

				return Long.valueOf(count);

			}

		})).longValue();

		if (filter == null) {

			totalCount = new Long(count);

		}

		return count;

	}

	public void close() throws CloseException {

		helper.close();

	}

	public void open() throws OpenException {

		helper.open();

	}

	@Override

	protected FeatureProvider internalGetFeatureProviderByReference(

			FeatureReferenceProviderServices reference) throws DataException {

		return internalGetFeatureProviderByReference(reference,

				getFeatureStore()

				.getDefaultFeatureType());

	}

	/**

	 * Return "is null" expression for current provider<br/>

	 */

	protected String getIsNullExpression() {

	    return "is null";

	}

	@Override

	protected FeatureProvider internalGetFeatureProviderByReference(

			FeatureReferenceProviderServices reference,

			FeatureType featureType)

			throws DataException {

		StringBuilder filter = new StringBuilder();

		FeatureAttributeDescriptor[] pk =

				getFeatureStore().getFeatureType(featureType.getId())

						.getPrimaryKey();

		List<Object> values = new ArrayList<Object>();

		int i;

		Object value;

		for (i = 0; i < pk.length; i++) {

		    value = reference.getKeyValue(pk[i].getName());

		    filter.append(helper.getSqlFieldName(pk[i]));

		    if (value == null) {

		        filter.append(" ");

		        filter.append(getIsNullExpression());

		        filter.append("");

		    } else {

			values.add(helper.dalValueToJDBC(pk[i], value));

			filter.append(" = ? ");

		    }

		    if (i < pk.length -1) {

		        filter.append(" AND ");

		    }

		}

		String sql = compoundSelect(featureType, filter.toString(), null, 1, 0);

		FeatureProvider data;

		int rsId = createResultSet(sql, values.toArray(), 1);

		try {

			if (!resulsetNext(rsId)) {

				throw new RuntimeException("Reference Not found");

			}

			data = createFeatureProvider(featureType);

			loadFeatureProvider(data, rsId);

		} finally {

			closeResulset(rsId);

		}

		return data;

	}

	public int getOIDType() {

		return DataTypes.UNKNOWN;

	}

	protected void initFeatureType() throws InitializeException {

		EditableFeatureType edFType = null;

		try {

			edFType = this.getStoreServices().createFeatureType(getName());

			helper.loadFeatureType(edFType, getJDBCParameters());

		} catch (DataException e) {

			throw new InitializeException(this.getProviderName(), e);

		}

		FeatureType defaultType = edFType.getNotEditableCopy();

		List<FeatureType> types = Collections.singletonList(defaultType);

		this.getStoreServices().setFeatureTypes(types, defaultType);

	}

	protected ResultSet createNewResultSet(final String sql,

			final Object[] values, final int fetchSize)

			throws DataException {

		this.open();

		return (ResultSet) getResource().execute(new ResourceAction() {

			public Object run() throws Exception {

				Connection conn = null;

				PreparedStatement st = null;

				ResultSet rs = null;

				try {

					conn = helper.getConnection();

					conn.setAutoCommit(false);

					st = conn.prepareStatement(sql);

					if (values != null) {

						Object value;

						for (int i = 0; i < values.length; i++) {

							value = values[i];

							if (value instanceof Geometry) {

								byte[] bytes;

								try {

									bytes = ((Geometry) value).convertToWKB();

								} catch (BaseException e) {

									throw new InvalidParameterException();

								}

								st.setBytes(i + 1, bytes);

							}

							st.setObject(i + 1, value);

						}

					}

					if (fetchSize > 0) {

						st.setFetchSize(fetchSize);

					}

                                        rs = JDBCHelper.executeQuery(st, sql);

					if (fetchSize > 0) {

						rs.setFetchSize(fetchSize);

					}

					return rs;

				} catch (SQLException e) {

					try {

						rs.close();

					} catch (Exception e1) {

					}

					try {

						st.close();

					} catch (Exception e1) {

					}

					try {

						conn.close();

					} catch (Exception e1) {

					}

					throw new JDBCExecutePreparedSQLException(sql,values,e);

				}

			}

		});

	}

	protected boolean closeResource(ResourceProvider resource) {

		try {

			this.helper.close();

		} catch (CloseException e) {

			logger.error("Exception in close Request", e);

		}

		return !this.helper.isOpen();

	}

	protected String compoundCountSelect(String filter) {

		// Select

		StringBuilder sql = new StringBuilder();

		sql.append("Select count(");

		String[] pkFields = getJDBCParameters().getPkFields();

		if (pkFields != null && pkFields.length == 1) {

			sql.append(helper.escapeFieldName(pkFields[0]));

		} else {

			sql.append('*');

		}

		sql.append(") ");

		sql.append("from ");

		if (this.directSQLMode) {

			sql.append("(");

			sql.append(getJDBCParameters().getSQL());

			sql.append(") as _subquery_alias_ ");

		} else {

			sql.append(getJDBCParameters().tableID());

		}

		sql.append(' ');

		appendWhere(sql, filter);

		return sql.toString();

	}

	protected void appendWhere(StringBuilder sql, String filter) {

		filter = fixFilter(filter);

		String initialFilter = getJDBCParameters().getBaseFilter();

		if ((initialFilter != null && initialFilter.length() != 0)

				|| (filter != null && filter.length() != 0)) {

			sql.append("where (");

			if (initialFilter != null && initialFilter.length() != 0

					&& filter != null && filter.length() != 0) {

				// initialFilter + filter

				sql.append('(');

				sql.append(initialFilter);

				sql.append(") and (");

				sql.append(filter);

				sql.append(')');

			} else if (initialFilter != null && initialFilter.length() != 0) {

				// initialFilter only

				sql.append(initialFilter);

			} else {

				// filter only

				sql.append(filter);

			}

			sql.append(") ");

		}

	}

	public void closeDone() throws DataException {

		// Do nothing

	}

	public void opendDone() throws DataException {

		// Nothing to do

	}

	public Envelope getEnvelope() throws DataException {

		this.open();

		String defaultGeometryAttributeName;

		defaultGeometryAttributeName = this.getFeatureStore()

			.getDefaultFeatureType()

				.getDefaultGeometryAttributeName();

		if( defaultGeometryAttributeName != null ) {

			return this.helper.getFullEnvelopeOfField(

					this.getJDBCParameters(),

					defaultGeometryAttributeName, 

					this.getJDBCParameters().getWorkingArea()

				);

		}

		return null;

	}

	public void resourceChanged(ResourceProvider resource) {

		this.getStoreServices().notifyChange(

				DataStoreNotification.RESOURCE_CHANGED,

				resource);

	}

	public boolean allowAutomaticValues() {

		return this.helper.allowAutomaticValues();

	}

	public DataServerExplorer getExplorer() throws ReadException {

		DataManager manager = DALLocator.getDataManager();

		JDBCServerExplorerParameters exParams;

		JDBCStoreParameters params = getJDBCParameters();

		try {

			exParams = (JDBCServerExplorerParameters) manager

					.createServerExplorerParameters(JDBCServerExplorerBase.NAME);

			exParams.setHost(params.getHost());

			exParams.setPort(params.getPort());

			exParams.setDBName(params.getDBName());

			exParams.setUser(params.getUser());

			exParams.setPassword(params.getPassword());

			exParams.setUrl(params.getUrl());

			exParams.setCatalog(params.getCatalog());

			exParams.setSchema(params.getSchema());

			exParams.setJDBCDriverClassName(params.getJDBCDriverClassName());

			return manager.openServerExplorer(JDBCServerExplorerBase.NAME,exParams);

		} catch (DataException e) {

			throw new ReadException(this.getProviderName(), e);

		} catch (ValidateDataParametersException e) {

			throw new ReadException(this.getProviderName(), e);

		}

	}

	@Override

	protected void doDispose() throws BaseException {

		this.close();

		resulsetList = null;

		this.helper.dispose();

		super.doDispose();

	}

	public Object createNewOID() {

		return null;

	}

	public String compoundSelect(FeatureType type, String filter, String order,

			long limit, long offset) throws DataException {

		StringBuilder sql = new StringBuilder();

		JDBCStoreParameters params = getJDBCParameters();

			FeatureAttributeDescriptor[] fields = type

					.getAttributeDescriptors();

			// Select

			sql.append("Select ");

			for (int i = 0; i < fields.length - 1; i++) {

				sql.append(helper.getSqlFieldName(fields[i]));

				sql.append(", ");

			}

			sql.append(helper.getSqlFieldName(fields[fields.length - 1]));

			sql.append(' ');

			FeatureAttributeDescriptor[] pkFields = getStoreServices()

					.getProviderFeatureType(type.getId()).getPrimaryKey();

			if (pkFields != null && pkFields.length > 0) {

				// checks for pk fields are in select

				boolean toAdd;

				for (int i = 0; i < pkFields.length; i++) {

					toAdd = true;

					for (int j = 0; j < fields.length; j++) {

						if (pkFields[i].getName().equals(fields[j].getName())) {

							toAdd = false;

							break;

						}

					}

					if (toAdd) {

						sql.append(", ");

						sql.append(helper.getSqlFieldName(pkFields[i]));

					}

				}

				sql.append(' ');

			}

			// table

			sql.append("from ");

			if (directSQLMode) {

			    sql.append(" (");

			    sql.append(params.getSQL());

	                    sql.append(") as _subquery_alias_ ");

			} else {

			    sql.append(params.tableID());

			}

			sql.append(' ');

			// Where

			appendWhere(sql, filter);

			// Order

			if ((params.getBaseOrder() != null && params.getBaseOrder()

					.length() != 0)

					|| (order != null && order.length() != 0)) {

				sql.append("order by ");

				if (order != null && order.length() != 0) {

					// order

					sql.append(order);

				} else {

					// initial order

					sql.append(params.getBaseOrder());

				}

				sql.append(' ');

			}

		// limit offset

		if (limit > 0 || offset > 0) {

			sql.append(helper.compoundLimitAndOffset(limit,offset));

		}

		return sql.toString();

	}

	public long getFeatureCount() throws DataException {

		return getCount(null);

	}

	public String getProviderName() {

		return NAME;

	}

	public boolean hasGeometrySupport() {

		return false;

	}

	public FeatureSetProvider createSet(FeatureQuery query,

			FeatureType featureType) throws DataException {

		return new JDBCSetProvider(this, query, featureType);

	}

	public Object getSourceId() {

		return this.getJDBCParameters().getSourceId();

	}

	public String getName() {

		return this.getJDBCParameters().tableID();

	}

	public String getFullName() {

		return this.getJDBCParameters().getHost()+":"+this.getJDBCParameters().getDBName()+":"+this.getJDBCParameters().tableID();

	}

	public ResourceProvider getResource() {

		return getHelper().getResource();

	}

	protected boolean isDirectSQLMode(){

	    return directSQLMode;

	}

}

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 3

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.dal.store.jdbc;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.feature.FeatureType;

import org.gvsig.fmap.dal.feature.spi.FeatureProvider;

import org.gvsig.tools.exception.BaseException;

/**

 * @author jmvivo

 *

 */

public class JDBCFastIterator extends JDBCIterator {

	protected FeatureProvider featureProvider;

	protected JDBCFastIterator(JDBCStoreProvider store, JDBCSetProvider set,

			FeatureType featureType, int resultsetID) throws DataException {

		super(store, set, featureType, resultsetID);

		this.featureProvider = super.createFeatureProvider();

	}

	protected FeatureProvider createFeatureProvider() throws DataException {

		return this.featureProvider;

	}

	@Override

	protected void doDispose() throws BaseException {

		super.doDispose();

		featureProvider = null;

	}

}

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 3

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.dal.store.jdbc;

import java.sql.Connection;

import org.gvsig.fmap.dal.exception.DataException;

/**

 * Contains an action to execute with

 * {@link JDBCHelper#doConnectionAction(ConnectionAction)}

 * 

 * @see {@link JDBCHelper#doConnectionAction(ConnectionAction)},

 *      {@link TransactionalAction}

 */

public interface ConnectionAction {

	Object action(Connection conn) throws DataException;

}