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.exception.VelocityException;
25 import org.apache.velocity.runtime.RuntimeConstants;
26 import org.apache.velocity.runtime.log.Log;
27 import org.apache.velocity.runtime.parser.Parser;
28 import org.apache.velocity.util.TemplateNumber;
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42 public class ASTGENode extends SimpleNode
43 {
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47 public ASTGENode(int id)
48 {
49 super(id);
50 }
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56 public ASTGENode(Parser p, int id)
57 {
58 super(p, id);
59 }
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65 public Object jjtAccept(ParserVisitor visitor, Object data)
66 {
67 return visitor.visit(this, data);
68 }
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73 public boolean evaluate( InternalContextAdapter context)
74 throws MethodInvocationException
75 {
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80 Object left = jjtGetChild(0).value( context );
81 Object right = jjtGetChild(1).value( context );
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87 if (left == null || right == null)
88 {
89 String msg = (left == null ? "Left" : "Right")
90 + " side ("
91 + jjtGetChild( (left == null? 0 : 1) ).literal()
92 + ") of '>=' operation has null value at "
93 + Log.formatFileString(this);
94
95 if (rsvc.getBoolean(RuntimeConstants.RUNTIME_REFERENCES_STRICT, false))
96 {
97 throw new VelocityException(msg);
98 }
99
100 log.error(msg);
101 return false;
102 }
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108 if (left instanceof TemplateNumber)
109 {
110 left = ( (TemplateNumber) left).getAsNumber();
111 }
112 if (right instanceof TemplateNumber)
113 {
114 right = ( (TemplateNumber) right).getAsNumber();
115 }
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121 if ( !( left instanceof Number ) || !( right instanceof Number ))
122 {
123 String msg = (!(left instanceof Number) ? "Left" : "Right")
124 + " side of '>=' operation is not a Number at "
125 + Log.formatFileString(this);
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127 if (rsvc.getBoolean(RuntimeConstants.RUNTIME_REFERENCES_STRICT, false))
128 {
129 throw new VelocityException(msg);
130 }
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132 log.error(msg);
133 return false;
134 }
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136 return MathUtils.compare ( (Number)left,(Number)right) >= 0;
137
138 }
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143 public Object value(InternalContextAdapter context)
144 throws MethodInvocationException
145 {
146 boolean val = evaluate(context);
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148 return val ? Boolean.TRUE : Boolean.FALSE;
149 }
150
151 }