svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.impl / src / main / java / org / gvsig / expressionevaluator / impl / function / string / ConcatFunction.java @ 44009
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package org.gvsig.expressionevaluator.impl.function.string; |
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import java.util.Objects; |
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import org.apache.commons.lang3.Range; |
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import org.gvsig.expressionevaluator.Interpreter; |
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import org.gvsig.expressionevaluator.spi.AbstractFunction; |
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public class ConcatFunction extends AbstractFunction { |
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public ConcatFunction() {
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super("String", "CONCAT", Range.between(1,Integer.MAX_VALUE)); |
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} |
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@Override
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public boolean allowConstantFolding() { |
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return true; |
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} |
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@Override
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public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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StringBuilder builder = new StringBuilder(); |
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for( Object arg : args ) { |
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if( arg != null ) { |
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builder.append(Objects.toString(arg)); |
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} |
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} |
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return builder.toString();
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} |
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} |