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Posted to dev@openjpa.apache.org by "wilesun (JIRA)" <ji...@apache.org> on 2008/08/09 13:56:44 UTC
[jira] Created: (OPENJPA-690) JPQL select express support alias
JPQL select express support alias
---------------------------------
Key: OPENJPA-690
URL: https://issues.apache.org/jira/browse/OPENJPA-690
Project: OpenJPA
Issue Type: Bug
Components: kernel
Affects Versions: 1.1.0
Reporter: wilesun
Fix For: 1.1.1
I hope the JPQL supprt the templete:(it can work with hibernate jpa)
select o.id, o.name as aName, o.code aCode form A o where ..
I modifid the jpql.jtt
1.jpql.jtt
void select_expression() #SELECTEXPRESSION : { }
{
((aggregate_select_expression()
| LOOKAHEAD(path()) path()
| identification_variable()
| (<OBJECT> "(" identification_variable() ")")
| constructor_expression()
| select_extension()
| string_literal()
| numeric_literal()) [LOOKAHEAD(1)<AS>] [LOOKAHEAD(identification_variable())identification_variable()])
}
2:openjpa-kernel\src\main\java\org\apache\openjpa\kernel\jpql\JPQLExpressionBuilder.java
private Expression assignProjections(JPQLNode parametersNode,
QueryExpressions exps) {
int count = parametersNode.getChildCount();
exps.projections = new Value[count];
exps.projectionClauses = new String[count];
exps.projectionAliases = new String[count];
Expression exp = null;
for (int i = 0; i < count; i++) {
JPQLNode parent = parametersNode.getChild(i);
JPQLNode projNode = firstChild(parent);
JPQLNode aliasNode = parent.children.length > 1 ? right(parent) : null;;
Value proj = getValue(projNode);
String alias = aliasNode == null ? lastChild(projNode).text : aliasNode.text;
exps.projections[i] = proj;
exps.projectionClauses[i] = assemble(projNode);
exps.projectionAliases[i] = alias;
}
return exp;
}
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[jira] Updated: (OPENJPA-690) JPQL select express support alias
Posted by "wilesun (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-690?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
wilesun updated OPENJPA-690:
----------------------------
Fix Version/s: (was: 1.1.1)
1.3.0
> JPQL select express support alias
> ---------------------------------
>
> Key: OPENJPA-690
> URL: https://issues.apache.org/jira/browse/OPENJPA-690
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.1.0
> Reporter: wilesun
> Fix For: 1.3.0
>
>
> I hope the JPQL supprt the templete:(it can work with hibernate jpa)
> select o.id, o.name as aName, o.code aCode form A o where ..
> I modifid the jpql.jtt
> 1.jpql.jtt
> void select_expression() #SELECTEXPRESSION : { }
> {
> ((aggregate_select_expression()
> | LOOKAHEAD(path()) path()
> | identification_variable()
> | (<OBJECT> "(" identification_variable() ")")
> | constructor_expression()
> | select_extension()
> | string_literal()
> | numeric_literal()) [LOOKAHEAD(1)<AS>] [LOOKAHEAD(identification_variable())identification_variable()])
> }
> 2:openjpa-kernel\src\main\java\org\apache\openjpa\kernel\jpql\JPQLExpressionBuilder.java
> private Expression assignProjections(JPQLNode parametersNode,
> QueryExpressions exps) {
> int count = parametersNode.getChildCount();
> exps.projections = new Value[count];
> exps.projectionClauses = new String[count];
> exps.projectionAliases = new String[count];
> Expression exp = null;
> for (int i = 0; i < count; i++) {
> JPQLNode parent = parametersNode.getChild(i);
> JPQLNode projNode = firstChild(parent);
> JPQLNode aliasNode = parent.children.length > 1 ? right(parent) : null;;
>
> Value proj = getValue(projNode);
> String alias = aliasNode == null ? lastChild(projNode).text : aliasNode.text;
>
> exps.projections[i] = proj;
> exps.projectionClauses[i] = assemble(projNode);
> exps.projectionAliases[i] = alias;
> }
> return exp;
> }
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