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The Amazon Web Services SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).
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/*
 * Copyright 2010-2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 * 
 *  http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file 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.amazonaws.services.datapipeline.model;

import java.io.Serializable;

/**
 * 
 * Defines the query to run against an object.
 * 
 */
public class Query implements Serializable {

    /**
     * List of selectors that define the query. An object must satisfy all of
     * the selectors to match the query.
     */
    private com.amazonaws.internal.ListWithAutoConstructFlag selectors;

    /**
     * List of selectors that define the query. An object must satisfy all of
     * the selectors to match the query.
     *
     * @return List of selectors that define the query. An object must satisfy all of
     *         the selectors to match the query.
     */
    public java.util.List getSelectors() {
        if (selectors == null) {
              selectors = new com.amazonaws.internal.ListWithAutoConstructFlag();
              selectors.setAutoConstruct(true);
        }
        return selectors;
    }
    
    /**
     * List of selectors that define the query. An object must satisfy all of
     * the selectors to match the query.
     *
     * @param selectors List of selectors that define the query. An object must satisfy all of
     *         the selectors to match the query.
     */
    public void setSelectors(java.util.Collection selectors) {
        if (selectors == null) {
            this.selectors = null;
            return;
        }
        com.amazonaws.internal.ListWithAutoConstructFlag selectorsCopy = new com.amazonaws.internal.ListWithAutoConstructFlag(selectors.size());
        selectorsCopy.addAll(selectors);
        this.selectors = selectorsCopy;
    }
    
    /**
     * List of selectors that define the query. An object must satisfy all of
     * the selectors to match the query.
     * 
     * Returns a reference to this object so that method calls can be chained together.
     *
     * @param selectors List of selectors that define the query. An object must satisfy all of
     *         the selectors to match the query.
     *
     * @return A reference to this updated object so that method calls can be chained 
     *         together.
     */
    public Query withSelectors(Selector... selectors) {
        if (getSelectors() == null) setSelectors(new java.util.ArrayList(selectors.length));
        for (Selector value : selectors) {
            getSelectors().add(value);
        }
        return this;
    }
    
    /**
     * List of selectors that define the query. An object must satisfy all of
     * the selectors to match the query.
     * 
     * Returns a reference to this object so that method calls can be chained together.
     *
     * @param selectors List of selectors that define the query. An object must satisfy all of
     *         the selectors to match the query.
     *
     * @return A reference to this updated object so that method calls can be chained 
     *         together.
     */
    public Query withSelectors(java.util.Collection selectors) {
        if (selectors == null) {
            this.selectors = null;
        } else {
            com.amazonaws.internal.ListWithAutoConstructFlag selectorsCopy = new com.amazonaws.internal.ListWithAutoConstructFlag(selectors.size());
            selectorsCopy.addAll(selectors);
            this.selectors = selectorsCopy;
        }

        return this;
    }

    /**
     * Returns a string representation of this object; useful for testing and
     * debugging.
     *
     * @return A string representation of this object.
     *
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getSelectors() != null) sb.append("Selectors: " + getSelectors() );
        sb.append("}");
        return sb.toString();
    }
    
    @Override
    public int hashCode() {
        final int prime = 31;
        int hashCode = 1;
        
        hashCode = prime * hashCode + ((getSelectors() == null) ? 0 : getSelectors().hashCode()); 
        return hashCode;
    }
    
    @Override
    public boolean equals(Object obj) {
        if (this == obj) return true;
        if (obj == null) return false;

        if (obj instanceof Query == false) return false;
        Query other = (Query)obj;
        
        if (other.getSelectors() == null ^ this.getSelectors() == null) return false;
        if (other.getSelectors() != null && other.getSelectors().equals(this.getSelectors()) == false) return false; 
        return true;
    }
    
}