/*
* Copyright 2011, Mysema Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mysema.query.types.expr;
import java.util.Collection;
import javax.annotation.Nullable;
import com.google.common.collect.ImmutableList;
import com.mysema.query.types.Expression;
import com.mysema.query.types.OperationImpl;
import com.mysema.query.types.Operator;
import com.mysema.query.types.Visitor;
/**
* @author tiwe
*
*/
public class CollectionOperation<E> extends CollectionExpressionBase<Collection<E>, E> {
private static final long serialVersionUID = 3154315192589335574L;
private final Class<E> elementType;
private final OperationImpl<Collection<E>> opMixin;
public static <E> CollectionOperation<E> create(Operator<?> op, Class<E> type, Expression<?> one) {
return new CollectionOperation<E>(op, type, ImmutableList.<Expression<?>>of(one));
}
public static <E> CollectionOperation<E> create(Operator<?> op, Class<E> type, Expression<?> one, Expression<?> two) {
return new CollectionOperation<E>(op, type, ImmutableList.of(one, two));
}
public static <E> CollectionOperation<E> create(Operator<?> op, Class<E> type, Expression<?>... args) {
return new CollectionOperation<E>(op, type, args);
}
public CollectionOperation(Operator<?> op, Class<? super E> type, Expression<?>... args) {
this(op, type, ImmutableList.copyOf(args));
}
public CollectionOperation(Operator<?> op, Class<? super E> type, ImmutableList<Expression<?>> args) {
super(new OperationImpl(Collection.class, op, args));
this.opMixin = (OperationImpl)super.mixin;
this.elementType = (Class<E>)type;
}
@Override
public Class<?> getParameter(int index) {
if (index == 0) {
return elementType;
} else {
throw new IndexOutOfBoundsException(String.valueOf(index));
}
}
@Override
@Nullable
public <R, C> R accept(Visitor<R, C> v, C context) {
return opMixin.accept(v, context);
}
@Override
public Class<E> getElementType() {
return elementType;
}
}