Package Express.services

Source Code of Express.services.ConcurrencyKeyHash

/*
Copyright (c) 2003-2009 ITerative Consulting Pty Ltd. All Rights Reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted
provided that the following conditions are met:

o Redistributions of source code must retain the above copyright notice, this list of conditions and
the following disclaimer.
 
o Redistributions in binary form must reproduce the above copyright notice, this list of conditions
and the following disclaimer in the documentation and/or other materials provided with the distribution.
   
o This jcTOOL Helper Class software, whether in binary or source form may not be used within,
or to derive, any other product without the specific prior written permission of the copyright holder

 
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


*/
package Express.services;

import java.io.Serializable;

import DisplayProject.binding.beans.Observable;
import Framework.Constants;
import Framework.HashFuncs;
import Framework.NumericData;
import Framework.RuntimeProperties;

/**
* This class appears in the project, but is for internal use only and is not documented.
* <p>
* @author ITerative Consulting
* @since  26-Feb-2008
*/
@RuntimeProperties(isDistributed=false, isAnchored=false, isShared=false, isTransactional=false)
@SuppressWarnings("serial")
public class ConcurrencyKeyHash
        extends HashFuncs
        implements Serializable, Observable
{

    // ----------
    // Attributes
    // ----------
    private int businessKeyType;
    private HashFuncs stringHash;

    // ------------
    // Constructors
    // ------------
    public ConcurrencyKeyHash() {
        // Explicitly call the superclass constructor to prevent the implicit call
        super();

    }

    public ConcurrencyKeyHash(int pKeyType) {
        this();
        this.setKeyType( pKeyType );
    }

    // -------
    // Methods
    // -------
    /**
     * compareKey<p>
     * <p>
     * @param key1 Type: Object
     * @param key2 Type: Object
     * @return boolean
     */
    public boolean compareKey(Object key1, Object key2) {
        if (((BusinessKey)key1).compare((BusinessKey)key2) == BusinessKey.CMP_EQ) {
            return true;
        }

        return false;
    }

    /**
     * hashKey<p>
     * <p>
     * @param key Type: Object
     * @return int
     */
    public int hashKey(Object key) {
        BusinessKey bk = (BusinessKey)key;

        if (bk.getValues() == null || bk.getValues().size() < 1) {
            return 0;
        }

        if (this.businessKeyType == 0) {

            if (bk.getValues().get(0) instanceof NumericData) {
                this.businessKeyType = Constants.SP_KT_INTEGER;
            }
            else {
                this.businessKeyType = Constants.SP_KT_STRING;
                this.stringHash = new HashFuncs(this.businessKeyType);
            }

        }

        if (this.businessKeyType == Constants.SP_KT_INTEGER) {
            return bk.getValues().get(0).asI4();
        }
        else {
            return this.stringHash.hashKey(bk.getValues().get(0).toString());
        }
    }
// end class ConcurrencyKeyHash
// c Pass 2 Conversion Time: 125 milliseconds
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