svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / expressionevaluator / impl / function / dataaccess / GetattrFunction.java @ 46517
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/*
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* To change this license header, choose License Headers in Project Properties.
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* To change this template file, choose Tools | Templates
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* and open the template in the editor.
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*/
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package org.gvsig.expressionevaluator.impl.function.dataaccess; |
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import java.util.Objects; |
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import org.apache.commons.lang3.StringUtils; |
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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.ExpressionBuilder; |
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import org.gvsig.fmap.dal.DALLocator; |
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import org.gvsig.fmap.dal.DataManager; |
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import org.gvsig.fmap.dal.SQLBuilder; |
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import org.gvsig.fmap.dal.feature.EditableFeatureAttributeDescriptor; |
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import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
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import org.gvsig.fmap.dal.feature.FeatureQuery; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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/**
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*
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* @author fdiaz
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*/
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public class GetattrFunction extends org.gvsig.expressionevaluator.impl.function.programming.GetattrFunction { |
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@Override
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public ExpressionBuilder.Value toValue(ExpressionBuilder builder, Codes args) {
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try {
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SQLBuilder sqlBuilder = (SQLBuilder) builder.getProperty("SQLBUILDER");
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if(sqlBuilder == null){ |
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return super.toValue(builder, args); |
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} |
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if(!(args.get(0) instanceof Code.Identifier)){ |
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return super.toValue(builder, args); |
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} |
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if(!(args.get(1) instanceof Code.Constant)){ |
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return super.toValue(builder, args); |
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} |
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String tableName = ((Code.Identifier)args.get(0)).name(); |
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String columnName = Objects.toString(((Code.Constant)args.get(1)).value(), null); |
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if(StringUtils.isBlank(tableName) || StringUtils.isBlank(columnName)){
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return super.toValue(builder, args); |
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} |
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FeatureAttributeDescriptor attr = null;
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FeatureQuery query = (FeatureQuery) builder.getProperty("Query");
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if(query != null){ |
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attr = query.getExtraColumns().get(columnName); |
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} |
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if(attr == null) { |
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String builderTable = (String) builder.getProperty("Table"); |
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FeatureType featureType = null;
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if(StringUtils.equalsIgnoreCase(builderTable, tableName)){
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featureType = (FeatureType) builder.getProperty("FeatureType");
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} else {
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DataManager dataManager = DALLocator.getDataManager(); |
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featureType = dataManager.getStoresRepository().getFeatureType(tableName); |
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} |
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if (featureType == null) { |
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return super.toValue(builder, args); |
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} |
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attr = featureType.getAttributeDescriptor(columnName); |
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if (attr == null) { |
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return super.toValue(builder, args); |
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} |
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} |
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SQLBuilder.TableNameBuilder table = sqlBuilder.createTableNameBuilder(); |
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table.name(tableName); |
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SQLBuilder.Column column = sqlBuilder.column(table, columnName); |
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return column;
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} catch (Exception ex) { |
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return super.toValue(builder, args); |
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} |
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} |
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} |