1 package org.apache.velocity.runtime.parser.node;
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22 import org.apache.velocity.context.InternalContextAdapter;
23 import org.apache.velocity.exception.MethodInvocationException;
24 import org.apache.velocity.runtime.log.Log;
25 import org.apache.velocity.runtime.parser.Parser;
26 import org.apache.velocity.util.TemplateNumber;
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40 public class ASTGENode extends SimpleNode
41 {
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45 public ASTGENode(int id)
46 {
47 super(id);
48 }
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54 public ASTGENode(Parser p, int id)
55 {
56 super(p, id);
57 }
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63 public Object jjtAccept(ParserVisitor visitor, Object data)
64 {
65 return visitor.visit(this, data);
66 }
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71 public boolean evaluate( InternalContextAdapter context)
72 throws MethodInvocationException
73 {
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78 Object left = jjtGetChild(0).value( context );
79 Object right = jjtGetChild(1).value( context );
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85 if (left == null || right == null)
86 {
87 log.error((left == null ? "Left" : "Right")
88 + " side ("
89 + jjtGetChild( (left == null? 0 : 1) ).literal()
90 + ") of '>=' operation has null value."
91 + " Operation not possible. "
92 + Log.formatFileString(this));
93 return false;
94 }
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100 if (left instanceof TemplateNumber)
101 {
102 left = ( (TemplateNumber) left).getAsNumber();
103 }
104 if (right instanceof TemplateNumber)
105 {
106 right = ( (TemplateNumber) right).getAsNumber();
107 }
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113 if ( !( left instanceof Number ) || !( right instanceof Number ))
114 {
115 log.error((!(left instanceof Number) ? "Left" : "Right")
116 + " side of '>=' operation is not a Number. "
117 + Log.formatFileString(this));
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119 return false;
120 }
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122 return MathUtils.compare ( (Number)left,(Number)right) >= 0;
123
124 }
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129 public Object value(InternalContextAdapter context)
130 throws MethodInvocationException
131 {
132 boolean val = evaluate(context);
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134 return val ? Boolean.TRUE : Boolean.FALSE;
135 }
136
137 }