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1
24 package org.objectweb.jalisto.se.query.constraint;
25
26 import org.objectweb.jalisto.se.api.Session;
27 import org.objectweb.jalisto.se.api.internal.SessionInternal;
28 import org.objectweb.jalisto.se.api.query.FielComparator;
29 import org.objectweb.jalisto.se.api.query.Query;
30 import org.objectweb.jalisto.se.api.query.Constraint;
31 import org.objectweb.jalisto.se.query.exception.QueryEngineException;
32 import org.objectweb.jalisto.se.query.execution.ExecutionTree;
33 import org.objectweb.jalisto.se.query.parameter.SubQuery;
34 import org.objectweb.jalisto.se.query.result.QueryResultWrapper;
35
36 import java.util.ArrayList  ;
37
38 public class SubQueryConstraintImpl extends ConstraintImpl {
39 public SubQueryConstraintImpl(SubQuery subQuery, String className, ArrayList subFieldNames) {
40 this.className = className;
41 this.subQuery = subQuery;
42 this.fieldNames = new String [subFieldNames.size()];
43 for (int i = 0; i < fieldNames.length; i++) {
44 fieldNames[i] = (String ) subFieldNames.get(i);
45 }
46 }
47
48 public Object getObject() {
49 return subQuery;
50 }
51
52 public Query getQuery() {
53 return subQuery.getQuery();
54 }
55
56 public ExecutionTree getTree() {
57 return subQuery.getTree(null);
58 }
59
60 public String getFieldName() {
61 return fieldNames[0];
62 }
63
64 public String [] getFieldNames() {
65 return fieldNames;
66 }
67
68 public Constraint contains() {
69 throw new QueryEngineException("cannot do this operation on a subQuery");
70 }
71
72 public Constraint equal() {
73 throw new QueryEngineException("cannot do this operation on a subQuery");
74 }
75
76 public Constraint greater() {
77 throw new QueryEngineException("cannot do this operation on a subQuery");
78 }
79
80 public Constraint identity() {
81 throw new QueryEngineException("cannot do this operation on a subQuery");
82 }
83
84 public Constraint like() {
85 throw new QueryEngineException("cannot do this operation on a subQuery");
86 }
87
88 public Constraint not() {
89 not = !not;
90 return this;
91 }
92
93 public Constraint smaller() {
94 throw new QueryEngineException("cannot do this operation on a subQuery");
95 }
96
97 public boolean execute(Session session, FielComparator comparator, Object candidate) {
98 return subQuery.getTree(null).resolveOnOneElement(
99 (SessionInternal) session,
100 (QueryResultWrapper) candidate);
101 }
102
103 public String getClassName() {
104 return className;
105 }
106
107 public String toString() {
108 StringBuffer sb = new StringBuffer ();
109 sb.append("SubQueryConstraint");
110 return sb.toString();
111 }
112
113 private SubQuery subQuery;
114 private String className;
115 private String [] fieldNames;
116 private boolean not = false;
117 }
118 |
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