svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.api / src / main / java / org / gvsig / expressionevaluator / spi / AbstractFunction.java @ 44376
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package org.gvsig.expressionevaluator.spi; |
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import java.io.InputStream; |
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import java.net.URL; |
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import java.time.LocalDateTime; |
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import java.time.ZoneId; |
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import java.time.temporal.TemporalAccessor; |
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import java.util.ArrayList; |
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import java.util.Date; |
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import java.util.List; |
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import java.util.Locale; |
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import java.util.Objects; |
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import org.apache.commons.io.IOUtils; |
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import org.apache.commons.lang3.BooleanUtils; |
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import org.apache.commons.lang3.Range; |
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import org.apache.commons.lang3.StringUtils; |
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import org.apache.commons.math.util.MathUtils; |
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import org.gvsig.expressionevaluator.Code; |
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import org.gvsig.expressionevaluator.Codes; |
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import org.gvsig.expressionevaluator.Function; |
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import org.gvsig.expressionevaluator.I18N; |
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import org.gvsig.expressionevaluator.Interpreter; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.primitive.Point; |
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import org.json.JSONArray; |
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import org.json.JSONObject; |
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@SuppressWarnings("UseSpecificCatch") |
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public abstract class AbstractFunction implements Function { |
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private final String name; |
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private String group; |
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private Range argc;
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private String description; |
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private String[] descriptionArgs; |
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private List<String> alias; |
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private String template; |
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private String returnType; |
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private boolean sqlCompatible; |
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protected AbstractFunction(String group, String name, Range argc, String description, String template, String[] descriptionArgs, String returnType, boolean sqlCompatible) { |
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this.name = name;
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this.group = group;
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this.argc = argc;
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this.description = description;
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this.template = template;
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this.descriptionArgs = descriptionArgs;
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this.returnType = returnType;
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this.sqlCompatible = sqlCompatible;
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load_from_resource(); |
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} |
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protected AbstractFunction(String group, String name, Range argc, String description, String template, String[] descriptionArgs, String returnType) { |
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this(group, name, argc, description, template, descriptionArgs, returnType, false); |
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} |
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protected AbstractFunction(String group, String name, Range argc, String description, String template, String[] descriptionArgs) { |
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this(group, name, argc, description, template, null, null); |
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} |
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protected AbstractFunction(String group, String name, Range argc, String description, String template) { |
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this(group, name, argc, description, template, null, null); |
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} |
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protected AbstractFunction(String group, String name, Range argc) { |
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this(group, name, argc, null, null, null, null); |
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} |
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@Override
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public String name() { |
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return this.name; |
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} |
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@Override
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public String returnType() { |
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return this.returnType; |
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} |
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@Override
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public String group() { |
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return this.group; |
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} |
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@Override
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public Range argc() {
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return argc;
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} |
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@Override
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public String description() { |
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return description;
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} |
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@Override
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public String[] descriptionArgs() { |
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return descriptionArgs;
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} |
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@Override
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public void addAlias(String name) { |
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if( StringUtils.isBlank(name) ) {
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return;
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} |
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if( this.alias == null ) { |
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this.alias = new ArrayList<>(); |
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} |
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if( this.alias.contains(name) ) { |
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return;
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} |
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this.alias.add(name);
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} |
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@Override
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public List<String> aliases() { |
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return this.alias; |
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} |
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@Override
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public String template() { |
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return this.template; |
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} |
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@Override
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public boolean isOperator() { |
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return false; |
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} |
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@Override
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public boolean useArgumentsInsteadObjects() { |
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return false; |
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} |
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@Override
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public boolean isSQLCompatible() { |
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return sqlCompatible;
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} |
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@Override
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public boolean allowConstantFolding() { |
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return false; |
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} |
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@Override
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public Object call(Interpreter interpreter, Codes args) throws Exception { |
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return null; |
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} |
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protected int getInt(Object args[], int n) { |
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if( args.length < n ) {
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throw new IllegalArgumentException(I18N.Required_argument_XargnX_and_only_found_XargcX_in_call_to_XIdentifierX(name(), args.length, n)); |
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} |
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Object value = args[n];
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if( value == null ) { |
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throw new IllegalArgumentException(I18N.Illegal_null_value_for_argument_XargnX_of_XIdentifierX_function(name(), n)); |
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} |
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if( !(value instanceof Number) ) { |
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String type = value.getClass().getCanonicalName();
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throw new IllegalArgumentException( |
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I18N.The_type_of_the_argument_XargnX_for_the_XIdentifierX_function_is_incorrect(name(), n) + " " +
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I18N.Expected_XexpectedX_and_found_XfoundX("Number",type)
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); |
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} |
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return ((Number)value).intValue(); |
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} |
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protected long getLong(Object args[], int n) { |
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if( args.length < n ) {
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throw new IllegalArgumentException(I18N.Required_argument_XargnX_and_only_found_XargcX_in_call_to_XIdentifierX(name(), args.length, n)); |
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} |
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Object value = args[n];
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if( value == null ) { |
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throw new IllegalArgumentException(I18N.Illegal_null_value_for_argument_XargnX_of_XIdentifierX_function(name(), n)); |
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} |
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if( !(value instanceof Number) ) { |
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String type = value.getClass().getCanonicalName();
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throw new IllegalArgumentException( |
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I18N.The_type_of_the_argument_XargnX_for_the_XIdentifierX_function_is_incorrect(name(), n) + " " +
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I18N.Expected_XexpectedX_and_found_XfoundX("Number",type)
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); |
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} |
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return ((Number)value).longValue(); |
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} |
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protected double getDouble(Object args[], int n) { |
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if( args.length < n ) {
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throw new IllegalArgumentException(I18N.Required_argument_XargnX_and_only_found_XargcX_in_call_to_XIdentifierX(name(), args.length, n)); |
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} |
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Object value = args[n];
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if( value == null ) { |
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throw new IllegalArgumentException(I18N.Illegal_null_value_for_argument_XargnX_of_XIdentifierX_function(name(), n)); |
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} |
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if( !(value instanceof Number) ) { |
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String type = value.getClass().getCanonicalName();
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throw new IllegalArgumentException( |
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I18N.The_type_of_the_argument_XargnX_for_the_XIdentifierX_function_is_incorrect(name(), n) + " " +
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I18N.Expected_XexpectedX_and_found_XfoundX("Number",type)
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); |
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} |
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return ((Number)value).doubleValue(); |
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} |
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protected String getStr(Object args[], int n) { |
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if( args.length < n ) {
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throw new IllegalArgumentException(I18N.Required_argument_XargnX_and_only_found_XargcX_in_call_to_XIdentifierX(name(), args.length, n)); |
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} |
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return Objects.toString(args[n], ""); |
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} |
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protected Object getObject(Object args[], int n) { |
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if( args.length < n ) {
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throw new IllegalArgumentException(I18N.Required_argument_XargnX_and_only_found_XargcX_in_call_to_XIdentifierX(name(), args.length, n)); |
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} |
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return args[n];
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} |
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protected Object getObject(Interpreter interpreter, Codes args, int n) { |
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if( args.size() < n ) {
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throw new IllegalArgumentException(I18N.Required_argument_XargnX_and_only_found_XargcX_in_call_to_XIdentifierX(name(), args.size(), n)); |
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} |
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Code arg = args.get(n); |
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Object value = interpreter.run(arg);
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return value;
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} |
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protected Geometry getGeom(Object[] args, int n) { |
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return this.getGeom(args, n, false); |
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} |
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protected Geometry getGeom(Object[] args, int n, boolean allowNull) { |
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if( args.length < n ) {
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throw new IllegalArgumentException(I18N.Required_argument_XargnX_and_only_found_XargcX_in_call_to_XIdentifierX(name(), args.length, n)); |
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} |
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Object value = args[n];
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if( value == null ) { |
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if( allowNull ) {
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return null; |
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} |
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throw new IllegalArgumentException(I18N.Illegal_null_value_for_argument_XargnX_of_XIdentifierX_function(name(), n)); |
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} |
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if( !(value instanceof Geometry) ) { |
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String type = value.getClass().getCanonicalName();
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throw new IllegalArgumentException( |
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I18N.The_type_of_the_argument_XargnX_for_the_XIdentifierX_function_is_incorrect(name(), n) + " " +
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I18N.Expected_XexpectedX_and_found_XfoundX("Geometry",type)
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); |
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} |
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return (Geometry)value;
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} |
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protected Point getPoint(Object[] args, int n) { |
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if( args.length < n ) {
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throw new IllegalArgumentException(I18N.Required_argument_XargnX_and_only_found_XargcX_in_call_to_XIdentifierX(name(), args.length, n)); |
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} |
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Object value = args[n];
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if( value == null ) { |
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return null; |
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} |
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if( !(value instanceof Point) ) { |
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String type = value.getClass().getCanonicalName();
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throw new IllegalArgumentException( |
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I18N.The_type_of_the_argument_XargnX_for_the_XIdentifierX_function_is_incorrect(name(), n) + " " +
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I18N.Expected_XexpectedX_and_found_XfoundX("Point",type)
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); |
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} |
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return (Point)value; |
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} |
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protected Date getDate(Object[] args, int n) { |
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if( args.length < n ) {
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throw new IllegalArgumentException(I18N.Required_argument_XargnX_and_only_found_XargcX_in_call_to_XIdentifierX(name(), args.length, n)); |
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} |
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Object value = args[n];
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if( value == null ) { |
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return null; |
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} |
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if( !(value instanceof Date) ) { |
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String type = value.getClass().getCanonicalName();
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throw new IllegalArgumentException( |
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I18N.The_type_of_the_argument_XargnX_for_the_XIdentifierX_function_is_incorrect(name(), n) + " " +
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I18N.Expected_XexpectedX_and_found_XfoundX("Date",type)
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); |
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} |
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return (Date)value; |
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} |
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protected LocalDateTime getLocalDateTime(Object[] args, int n) { |
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if( args.length < n ) {
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throw new IllegalArgumentException(I18N.Required_argument_XargnX_and_only_found_XargcX_in_call_to_XIdentifierX(name(), args.length, n)); |
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} |
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Object value = args[n];
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if( value == null ) { |
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return null; |
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} |
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if( value instanceof Date ) { |
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Date date = ((Date)value); |
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return date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime();
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} |
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if( value instanceof LocalDateTime ) { |
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return (LocalDateTime) value;
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} |
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if( value instanceof TemporalAccessor ) { |
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return LocalDateTime.from(((TemporalAccessor)value));
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} |
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String type = value.getClass().getCanonicalName();
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throw new IllegalArgumentException( |
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I18N.The_type_of_the_argument_XargnX_for_the_XIdentifierX_function_is_incorrect(name(), n) + " " +
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I18N.Expected_XexpectedX_and_found_XfoundX("Temporal/Date",type)
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); |
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} |
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protected boolean getBoolean(Object args[], int n, Double accuracy) { |
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if( args.length < n ) {
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throw new IllegalArgumentException(I18N.Required_argument_XargnX_and_only_found_XargcX_in_call_to_XIdentifierX(name(), args.length, n)); |
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} |
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Object value = args[n];
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return toBoolean(value, accuracy);
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} |
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protected boolean getBoolean(Interpreter interpreter, Codes args, int n) { |
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Object value = getObject(interpreter, args, n);
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return toBoolean(value, interpreter.getAccuracy());
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} |
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protected boolean toBoolean(Object value, Double accuracy) { |
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if( value == null ) { |
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return false; |
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} |
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if( value instanceof Boolean ) { |
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return (Boolean)value; |
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} |
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if( value instanceof Number ) { |
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return MathUtils.compareTo(
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((Number) value).doubleValue(),
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0,
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accuracy==null? MathUtils.EPSILON:accuracy
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) == 0;
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} |
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return BooleanUtils.toBoolean(value.toString());
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} |
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private void load_from_resource() { |
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String lang = Locale.getDefault().getLanguage(); |
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URL url = this.getClass().getResource("/org/gvsig/expressionevaluator/functions/"+lang+"/"+this.name()+".json"); |
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if( url == null ) { |
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url = this.getClass().getResource("/org/gvsig/expressionevaluator/functions/en/"+this.name()+".json"); |
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if( url == null ) { |
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return;
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} |
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} |
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InputStream is = null; |
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JSONObject json; |
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try {
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is = url.openStream(); |
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List<String> lines = IOUtils.readLines(is); |
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json = new JSONObject(StringUtils.join(lines, "\n")); |
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} catch (Exception ex) { |
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return;
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} finally {
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IOUtils.closeQuietly(is); |
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} |
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if( json.has("group") ) { |
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this.group = json.getString("group"); |
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} |
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if( json.has("description") ) { |
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Object x = json.get("description"); |
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if( x instanceof String ) { |
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this.description = (String) x; |
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} else if( x instanceof JSONArray ) { |
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StringBuilder builder = new StringBuilder(); |
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for (int i = 0; i < ((JSONArray)x).length(); i++) { |
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if( i>0 ) { |
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builder.append(" ");
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} |
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builder.append(((JSONArray)x).getString(i)); |
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} |
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this.description = builder.toString();
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} else {
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this.description = x.toString();
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} |
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this.description = StringUtils.replace(
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this.description,
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"@@@",
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url.toString() |
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); |
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} |
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if( json.has("template") ) { |
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this.template = json.getString("template"); |
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} |
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if( json.has("returnType") ) { |
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this.returnType = json.getString("returnType"); |
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} |
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if( json.has("sqlCompatible") ) { |
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this.sqlCompatible = json.getBoolean("sqlCompatible"); |
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} |
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if( json.has("args") ) { |
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JSONArray x = json.getJSONArray("args");
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String[] args = new String[x.length()]; |
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for (int i = 0; i < x.length(); i++) { |
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args[i] = x.getString(i); |
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} |
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this.descriptionArgs = args;
|
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} |
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if( json.has("alias") ) { |
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JSONArray x = json.getJSONArray("alias");
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for (int i = 0; i < x.length(); i++) { |
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this.addAlias(x.getString(i));
|
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} |
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} |
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} |
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} |