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added ParametrizedExpression for Collection, Set, List and Map typed expressions

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This commit is contained in:
Timo Westkämper 2010-09-17 11:07:25 +00:00
parent c6839b3d48
commit b81b7d40b7
9 changed files with 77 additions and 11 deletions
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13
querydsl-core/src/main/java/com/mysema/query/alias/PropertyAccessInvocationHandler.java
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@ -28,13 +28,10 @@ import net.sf.cglib.proxy.MethodProxy;
import org.apache.commons.lang.StringUtils;
import com.mysema.query.types.Expression;
import com.mysema.query.types.ParametrizedExpression;
import com.mysema.query.types.Path;
import com.mysema.query.types.PathMetadata;
import com.mysema.query.types.PathMetadataFactory;
import com.mysema.query.types.expr.CollectionExpression;
import com.mysema.query.types.expr.MapExpression;
import com.mysema.query.types.path.ListPath;
import com.mysema.query.types.path.MapPath;
import com.mysema.util.ReflectionUtils;
/**
@ -103,8 +100,8 @@ class PropertyAccessInvocationHandler implements MethodInterceptor {
if (propToObj.containsKey(propKey)) {
rv = propToObj.get(propKey);
} else {
PathMetadata<Integer> pm = PathMetadataFactory.forListAccess((ListPath<?, ?>) hostExpression, (Integer) args[0]);
Class<?> elementType = ((CollectionExpression<?,?>) hostExpression).getElementType();
PathMetadata<Integer> pm = PathMetadataFactory.forListAccess((Path<?>)hostExpression, (Integer) args[0]);
Class<?> elementType = ((ParametrizedExpression<?>) hostExpression).getParameter(0);
rv = newInstance(elementType, elementType, proxy, propKey, pm);
}
aliasFactory.setCurrent(propToExpr.get(propKey));
@ -114,8 +111,8 @@ class PropertyAccessInvocationHandler implements MethodInterceptor {
if (propToObj.containsKey(propKey)) {
rv = propToObj.get(propKey);
} else {
PathMetadata<?> pm = PathMetadataFactory.forMapAccess((MapPath<?, ?, ?>) hostExpression, args[0]);
Class<?> valueType = ((MapExpression<?, ?>) hostExpression).getValueType();
PathMetadata<?> pm = PathMetadataFactory.forMapAccess((Path<?>)hostExpression, args[0]);
Class<?> valueType = ((ParametrizedExpression<?>) hostExpression).getParameter(1);
rv = newInstance(valueType, valueType, proxy, propKey, pm);
}
aliasFactory.setCurrent(propToExpr.get(propKey));

16
querydsl-core/src/main/java/com/mysema/query/types/ParametrizedExpression.java Normal file
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@ -0,0 +1,16 @@
package com.mysema.query.types;
/**
* @author tiwe
*
* @param <T>
*/
public interface ParametrizedExpression<T> extends Expression<T> {
/**
* @param index
* @return
*/
Class<?> getParameter(int index);
}

3
querydsl-core/src/main/java/com/mysema/query/types/expr/CollectionExpression.java
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@ -8,6 +8,7 @@ package com.mysema.query.types.expr;
import java.util.Collection;
import com.mysema.query.types.Expression;
import com.mysema.query.types.ParametrizedExpression;
/**
* CollectionExpression represents java.util.Collection typed expressions
@ -17,7 +18,7 @@ import com.mysema.query.types.Expression;
* @param <E>
* @see java.util.Collection
*/
public interface CollectionExpression<C extends Collection<E>, E>{
public interface CollectionExpression<C extends Collection<E>, E> extends ParametrizedExpression<C>{
/**
* Get an expression for <code>this.contains(child)</code>

5
querydsl-core/src/main/java/com/mysema/query/types/expr/MapExpression.java
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@ -5,7 +5,10 @@
*/
package com.mysema.query.types.expr;
import java.util.Map;
import com.mysema.query.types.Expression;
import com.mysema.query.types.ParametrizedExpression;
/**
* MapExpression represents java.util.Map typed expressions
@ -16,7 +19,7 @@ import com.mysema.query.types.Expression;
* @param <V> value type
* @see java.util.Map
*/
public interface MapExpression<K, V> {
public interface MapExpression<K, V> extends ParametrizedExpression<Map<K,V>>{
/**
* @param key

13
querydsl-core/src/main/java/com/mysema/query/types/path/CollectionPath.java
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@ -10,8 +10,8 @@ import java.util.Collection;
import com.mysema.commons.lang.Assert;
import com.mysema.query.types.Path;
import com.mysema.query.types.PathMetadata;
import com.mysema.query.types.PathImpl;
import com.mysema.query.types.PathMetadata;
import com.mysema.query.types.Visitor;
import com.mysema.query.types.expr.CollectionExpressionBase;
@ -84,4 +84,15 @@ public class CollectionPath<E> extends CollectionExpressionBase<Collection<E>,E>
return pathMixin.getAnnotatedElement();
}
@Override
public Class<?> getParameter(int index) {
if (index == 0){
return elementType;
}else{
throw new IndexOutOfBoundsException(String.valueOf(index));
}
}
}

9
querydsl-core/src/main/java/com/mysema/query/types/path/ListPath.java
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@ -158,4 +158,13 @@ public class ListPath<E, Q extends SimpleExpression<E>> extends CollectionExpres
}
}
@Override
public Class<?> getParameter(int index) {
if (index == 0){
return elementType;
}else{
throw new IndexOutOfBoundsException(String.valueOf(index));
}
}
}

11
querydsl-core/src/main/java/com/mysema/query/types/path/MapPath.java
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@ -150,5 +150,16 @@ public class MapPath<K, V, E extends SimpleExpression<V>> extends MapExpressionB
return constructor.newInstance(pm);
}
}
@Override
public Class<?> getParameter(int index) {
if (index == 0){
return keyType;
}else if (index == 1){
return valueType;
}else{
throw new IndexOutOfBoundsException(String.valueOf(index));
}
}
}

9
querydsl-core/src/main/java/com/mysema/query/types/path/SetPath.java
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@ -83,5 +83,14 @@ public class SetPath<E> extends CollectionExpressionBase<Set<E>,E> implements Pa
public AnnotatedElement getAnnotatedElement(){
return pathMixin.getAnnotatedElement();
}
@Override
public Class<?> getParameter(int index) {
if (index == 0){
return elementType;
}else{
throw new IndexOutOfBoundsException(String.valueOf(index));
}
}
}

9
querydsl-core/src/main/java/com/mysema/query/types/query/ListSubQuery.java
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@ -78,5 +78,14 @@ public final class ListSubQuery<A> extends CollectionExpressionBase<List<A>,A> i
public Expression<?> as(Expression<?> alias) {
return SimpleOperation.create(alias.getType(),(Operator)Ops.ALIAS, this, alias);
}
@Override
public Class<?> getParameter(int index) {
if (index == 0){
return elementType;
}else{
throw new IndexOutOfBoundsException(String.valueOf(index));
}
}
}