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package org.apache.commons.jexl.parser; |
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import java.lang.reflect.InvocationTargetException; |
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import org.apache.commons.jexl.JexlContext; |
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import org.apache.commons.jexl.util.Introspector; |
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import org.apache.commons.jexl.util.introspection.VelMethod; |
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import org.apache.commons.jexl.util.introspection.Info; |
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public class ASTMethod extends SimpleNode |
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{ |
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private static Info DUMMY = new Info("", 1, 1); |
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public ASTMethod(int id) |
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{ |
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super(id); |
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} |
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public ASTMethod(Parser p, int id) |
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{ |
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super(p, id); |
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} |
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public Object jjtAccept(ParserVisitor visitor, Object data) |
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{ |
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return visitor.visit(this, data); |
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} |
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public Object execute(Object obj, JexlContext jc) |
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throws Exception |
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{ |
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String methodName = ((ASTIdentifier)jjtGetChild(0)).val; |
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int paramCount = jjtGetNumChildren()-1; |
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Object params[] = new Object[paramCount]; |
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try |
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{ |
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for (int i=0; i<paramCount; i++) |
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params[i] = ( (SimpleNode) jjtGetChild(i+1)).value(jc); |
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} |
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VelMethod vm = Introspector.getUberspect().getMethod(obj, methodName, params, DUMMY); |
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if (vm == null) |
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return null; |
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return vm.invoke(obj, params); |
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} |
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catch(InvocationTargetException e) |
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{ |
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Throwable t = e.getTargetException(); |
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if (t instanceof Exception) |
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throw (Exception) t; |
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} |
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throw e; |
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} |
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} |
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} |