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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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 org.apache.olingo.odata2.core.uri.expression;

import org.apache.olingo.odata2.api.edm.EdmType;
import org.apache.olingo.odata2.api.exception.ODataApplicationException;
import org.apache.olingo.odata2.api.uri.expression.CommonExpression;
import org.apache.olingo.odata2.api.uri.expression.ExceptionVisitExpression;
import org.apache.olingo.odata2.api.uri.expression.ExpressionKind;
import org.apache.olingo.odata2.api.uri.expression.ExpressionVisitor;
import org.apache.olingo.odata2.api.uri.expression.UnaryExpression;
import org.apache.olingo.odata2.api.uri.expression.UnaryOperator;

/**
 *  
 */
public class UnaryExpressionImpl implements UnaryExpression {
  private InfoUnaryOperator operatorInfo = null;
  private CommonExpression operand = null;
  private EdmType edmType = null;

  public UnaryExpressionImpl(final InfoUnaryOperator operatorInfo, final CommonExpression operand) {
    this.operatorInfo = operatorInfo;
    this.operand = operand;
  }

  @Override
  public ExpressionKind getKind() {
    return ExpressionKind.UNARY;
  }

  @Override
  public UnaryOperator getOperator() {
    return operatorInfo.operator;
  }

  @Override
  public CommonExpression getOperand() {
    return operand;
  }

  @Override
  public EdmType getEdmType() {
    return edmType;
  }

  @Override
  public CommonExpression setEdmType(final EdmType edmType) {
    this.edmType = edmType;
    return this;
  }

  @Override
  public String getUriLiteral() {
    return operatorInfo.getSyntax();
  }

  @Override
  public Object accept(final ExpressionVisitor visitor) throws ExceptionVisitExpression, ODataApplicationException {
    Object retOperand = operand.accept(visitor);

    return visitor.visitUnary(this, operatorInfo.getOperator(), retOperand);
  }

}
