/*******************************************************************************
* Copyright 2013 SAP AG
*
* 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.sap.core.odata.core.uri.expression;
import java.util.ArrayList;
import java.util.List;
import com.sap.core.odata.api.edm.EdmType;
import com.sap.core.odata.api.exception.ODataApplicationException;
import com.sap.core.odata.api.uri.expression.CommonExpression;
import com.sap.core.odata.api.uri.expression.ExceptionVisitExpression;
import com.sap.core.odata.api.uri.expression.ExpressionKind;
import com.sap.core.odata.api.uri.expression.ExpressionVisitor;
import com.sap.core.odata.api.uri.expression.OrderByExpression;
import com.sap.core.odata.api.uri.expression.OrderExpression;
/**
* @author SAP AG
*/
public class OrderByExpressionImpl implements OrderByExpression {
private String orderbyString;
List<OrderExpression> orders;
public OrderByExpressionImpl(final String orderbyString) {
this.orderbyString = orderbyString;
orders = new ArrayList<OrderExpression>();
}
@Override
public String getExpressionString() {
return orderbyString;
}
@Override
public List<OrderExpression> getOrders() {
return orders;
}
@Override
public int getOrdersCount() {
return orders.size();
}
public void addOrder(final OrderExpression orderNode) {
orders.add(orderNode);
}
@Override
public ExpressionKind getKind() {
return ExpressionKind.ORDERBY;
}
@Override
public EdmType getEdmType() {
return null;
}
@Override
public CommonExpression setEdmType(final EdmType edmType) {
return this;
}
@Override
public String getUriLiteral() {
return orderbyString;
}
@Override
public Object accept(final ExpressionVisitor visitor) throws ExceptionVisitExpression, ODataApplicationException {
ArrayList<Object> retParameters = new ArrayList<Object>();
for (OrderExpression order : orders) {
Object retParameter = order.accept(visitor);
retParameters.add(retParameter);
}
Object ret = visitor.visitOrderByExpression(this, orderbyString, retParameters);
return ret;
}
}