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Java > Open Source Codes > org > apache > cayenne > query > EJBQLQueryMetadata


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19 package org.apache.cayenne.query;
20
21 import org.apache.cayenne.ejbql.EJBQLCompiledExpression;
22 import org.apache.cayenne.map.EntityResolver;
23 import org.apache.cayenne.map.ObjEntity;
24
25 /**
26  * A metadata object for the {@link EJBQLQuery}.
27  *
28  * @since 3.0
29  * @author Andrus Adamchik
30  */
31 class EJBQLQueryMetadata extends BaseQueryMetadata {
32
33     private SQLResultSetMapping resultSetMapping;
34
35     void setResultSetMapping(SQLResultSetMapping resultSetMapping) {
36         this.resultSetMapping = resultSetMapping;
37     }
38
39     public SQLResultSetMapping getResultSetMapping() {
40         return resultSetMapping;
41     }
42
43     boolean resolve(EntityResolver resolver, EJBQLQuery query) {
44         EJBQLCompiledExpression expression = query.getExpression(resolver);
45         setResultSetMapping(expression.getResultSetMapping());
46         
47         ObjEntity root = expression.getRootDescriptor().getEntity();
48
49         // TODO: andrus, 4/3/2007 - generate cache key based on EJBQL statement
50 return super.resolve(root, resolver, null);
51     }
52 }
53
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