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This commit is contained in:
Timo Westkämper 2009-01-30 12:16:07 +00:00
parent af7df11b69
commit 3933894e08
2 changed files with 20 additions and 2 deletions
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14
querydsl-core/src/main/java/com/mysema/query/grammar/types/Projection.java
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@ -1,9 +1,16 @@
/*
* Copyright (c) 2009 Mysema Ltd.
* All rights reserved.
*
*/
package com.mysema.query.grammar.types;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.util.HashSet;
import java.util.Set;
/**
* Projection provides
@ -13,6 +20,8 @@ import java.lang.reflect.ParameterizedType;
*/
public class Projection extends Path.PEntity<Object>{
private Set<String> fields = new HashSet<String>();
private String entityName;
private static Method _numberMethod, _comparableMethod;
@ -37,6 +46,7 @@ public class Projection extends Path.PEntity<Object>{
for (Field field : cl.getDeclaredFields()){
if (Expr.class.isAssignableFrom(field.getType()) && field.getGenericType() instanceof ParameterizedType){
field.setAccessible(true);
fields.add(field.getName());
handleField(field);
}
}
@ -71,4 +81,8 @@ public class Projection extends Path.PEntity<Object>{
return entityName;
}
public void accept(SubQuery<?,?> query){
// TODO : validate that the given SubQuery can be projected
}
}

8
querydsl-core/src/main/java/com/mysema/query/grammar/types/SubQuery.java
View File

@ -38,11 +38,15 @@ public class SubQuery<JM,A> extends Expr<A> implements Query<SubQuery<JM,A>>, Co
public SubQuery<JM,A> join(EEntity<?> o) {query.join(o); return this;}
public SubQuery<JM,A> leftJoin(EEntity<?> o) {query.leftJoin(o); return this;}
public SubQuery<JM,A> orderBy(OrderSpecifier<?>... o) {query.orderBy(o); return this;}
public SubQuery<JM,A> select(Expr<?>... o) {query.s(o); return this;}
public SubQuery<JM,A> select(Expr<?>... o) {
query.s(o); return this;}
public SubQuery<JM,A> where(EBoolean... o) {query.where(o); return this;}
public SubQuery<JM,A> with(EBoolean o) {query.with(o); return this;}
// TODO : add some validation that the given Projection is valid for this subquery
public Alias.ASimple<A> as(Projection to) { return new Alias.ASimple<A>(this, to.getName()); }
public Alias.ASimple<A> as(Projection to) {
to.accept(this);
return new Alias.ASimple<A>(this, to.getName());
}
public Alias.ASimple<A> as(String to) { return new Alias.ASimple<A>(this, to); }
private static class QueryWithPublicSelect<JM> extends QueryBase<JM,QueryWithPublicSelect<JM>>{