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/*
 * All content copyright Terracotta, Inc., unless otherwise indicated.
 *
 * 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 org.terracotta.context.query;

import java.util.Set;

import org.terracotta.context.TreeNode;

class NullQuery implements Query {

  static final Query INSTANCE = new NullQuery();
  
  private NullQuery() {
    //singleton
  }
  
  @Override
  public Set execute(Set input) {
    return input;
  }
  
  @Override
  public String toString() {
    return "";
  }
}




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