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1 package com.genimen.djeneric.repository.oql.core.nodes;
2
3 import java.util.ArrayList  ;
4 import java.util.HashMap ;
5
6 import com.genimen.djeneric.repository.oql.core.DjOqlParserEngine;
7 import com.genimen.djeneric.repository.oql.core.MatchException;
8 import com.genimen.djeneric.repository.oql.core.ParseException;
9 import com.genimen.djeneric.repository.oql.core.SimpleNode;
10
11 public class PropertyOrFunctionNode extends SimpleNode implements ValueExpression
12 {
13 boolean _isFunction = false;
14
15 public PropertyOrFunctionNode(int i)
16 {
17 super(i);
18 }
19
20 public PropertyOrFunctionNode(DjOqlParserEngine p, int i)
21 {
22 super(p, i);
23 }
24
25 public String getName()
26 {
27 if (_isFunction) return "function";
28 return "property";
29 }
30
31 public String toString()
32 {
33 return getName();
34 }
35
36 public boolean isFunction()
37 {
38 return _isFunction;
39 }
40
41 public void setFunction(boolean b)
42 {
43 _isFunction = b;
44 }
45
46 public Object [] getParams()
47 {
48 ArrayList paramList = new ArrayList ();
49 for (int i = 1; i < getChildCount(); i++)
50 {
51 paramList.add(getChild(i));
52 }
53 return paramList.toArray(new Object [0]);
54 }
55
56 public void translate(StringBuffer result, HashMap path2AliasMapping) throws ParseException
57 {
58 appendOpenBrackets(result);
59 if (isFunction())
60 {
61 result.append(getChild(0).toString());
62
63 result.append("(");
65 for (int i = 1; i < getChildCount(); i++)
66 {
67 getChild(i).translate(result, path2AliasMapping);
68 if (i != getChildCount() - 1) result.append(", ");
69 }
70 result.append(")");
71 }
72 else super.translate(result, path2AliasMapping);
73 appendCloseBrackets(result);
74 }
75
76 public Object getValue(MatchingContext context) throws MatchException
77 {
78 if (isFunction())
79 {
80 throw new MatchException("Functions not supported in OQL where clause");
81 }
82 else
83 {
84 ValueExpression prop = (ValueExpression) getChild(0);
85 return prop.getValue(context);
86 }
87 }
88
89 protected Object evalFunction(Object obj, MatchingContext context) throws Exception
90 {
91 throw new MatchException("Functions not supported in OQL where clause");
92 }
93
94 } |
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