svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.db / org.gvsig.fmap.dal.db.mdb / src / main / java / org / gvsig / fmap / dal / store / mdb / expressionbuilderformatter / Getattr.java @ 44916
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package org.gvsig.fmap.dal.store.mdb.expressionbuilderformatter; |
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import org.apache.commons.lang3.StringUtils; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.FUNCTION_GETATTR; |
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import org.gvsig.expressionevaluator.ExpressionBuilder.Function; |
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import org.gvsig.expressionevaluator.ExpressionBuilder.Value; |
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import org.gvsig.expressionevaluator.ExpressionBuilder.Variable; |
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import org.gvsig.expressionevaluator.ExpressionBuilder.Constant; |
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import org.gvsig.expressionevaluator.Formatter; |
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import org.gvsig.fmap.dal.SQLBuilder; |
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/**
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*
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* @author jjdelcerro
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*/
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public class Getattr implements Formatter<Value> { |
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private final SQLBuilder sqlbuilder; |
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private final Formatter<Value> formatter; |
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public Getattr(SQLBuilder sqlbuilder, Formatter<Value> formatter) { |
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this.sqlbuilder = sqlbuilder;
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this.formatter = formatter;
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} |
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@Override
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public boolean canApply(Value value) { |
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if (value instanceof Function) { |
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if( StringUtils.equalsIgnoreCase(FUNCTION_GETATTR, ((Function) value).name()) ) {
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Value obj = ((Function) value).parameters().get(0);
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Value attrname = ((Function) value).parameters().get(1);
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return obj instanceof Variable && attrname instanceof Constant; |
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} |
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} |
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return false; |
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} |
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@Override
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public String format(Value function0) { |
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Function function = (Function) function0; |
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Variable obj = (Variable) function.parameters().get(0);
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Constant attrname = (Constant) function.parameters().get(1);
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return this.sqlbuilder.as_identifier(obj.name())+"."+this.sqlbuilder.as_identifier((String) attrname.value()); |
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} |
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} |