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.h2 / src / main / java / org / gvsig / fmap / dal / store / h2 / expressionbuilderformatter / Decode.java @ 44748
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package org.gvsig.fmap.dal.store.h2.expressionbuilderformatter; |
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import java.util.List; |
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import java.util.Objects; |
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import org.apache.commons.lang3.StringUtils; |
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import org.apache.commons.lang3.tuple.Pair; |
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import org.gvsig.expressionevaluator.ExpressionBuilder; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.FUNCTION_DECODE; |
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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.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 Decode 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 Decode(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(ExpressionBuilder.Value value) { |
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if (value instanceof ExpressionBuilder.Function) { |
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if( StringUtils.equalsIgnoreCase(FUNCTION_DECODE, ((Function) value).name()) ) {
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List<Pair<String,Value>> parameters = ((Function) value).parameters(); |
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if( parameters.size()==2) { |
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Value p1 = parameters.get(0).getValue();
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Value p2 = parameters.get(1).getValue();
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if( p1 instanceof ExpressionBuilder.Constant && |
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p2 instanceof ExpressionBuilder.Constant &&
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((ExpressionBuilder.Constant)p1).value() instanceof String && |
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((ExpressionBuilder.Constant)p2).value() instanceof String |
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) { |
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String p2value = ((ExpressionBuilder.Constant)p2).value().toString();
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if( StringUtils.equalsIgnoreCase(p2value, "hex") ) { |
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return true; |
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} |
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} |
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} |
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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 function) { |
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List<Pair<String,Value>> parameters = ((Function) function).parameters(); |
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Value p1 = parameters.get(0).getValue();
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String p1value = Objects.toString(((ExpressionBuilder.Constant)p1).value(), ""); |
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String r = "X'"+p1value+"'"; |
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return r;
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} |
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} |