1de5e7c00e
Replaced gel with grel in other places in the code base while maintaining backward compatibility. Changed layout in expression preview dialog to accommodate long GREL name. git-svn-id: http://google-refine.googlecode.com/svn/trunk@1442 7d457c2a-affb-35e4-300a-418c747d4874
36 lines
1.1 KiB
Java
36 lines
1.1 KiB
Java
package com.google.refine.expr.functions.booleans;
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import java.util.Properties;
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import org.json.JSONException;
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import org.json.JSONWriter;
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import com.google.refine.expr.EvalError;
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import com.google.refine.grel.ControlFunctionRegistry;
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import com.google.refine.grel.Function;
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public class Not implements Function {
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public Object call(Properties bindings, Object[] args) {
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if (args.length == 1) {
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return !objectToBoolean(args[0]);
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}
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return new EvalError(ControlFunctionRegistry.getFunctionName(this) + " expects a boolean");
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}
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public static boolean objectToBoolean(Object o) {
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return o == null ? false : (
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(o instanceof Boolean) ? ((Boolean) o).booleanValue() : Boolean.parseBoolean(o.toString()));
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}
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public void write(JSONWriter writer, Properties options)
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throws JSONException {
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writer.object();
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writer.key("description"); writer.value("Returns the opposite of b");
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writer.key("params"); writer.value("boolean b");
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writer.key("returns"); writer.value("boolean");
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writer.endObject();
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}
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}
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