SymbolInfo.java from Texai at Krugle
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/*
* SymbolInfo.java
*
* Created on October 24, 2006, 1:38 PM
*
* Description: Contains the specialized fields for Symbol.
*
* Copyright (C) 2006 Stephen L. Reed.
*
* This program is free software; you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program;
* if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.texai.kb.ejb.entity;
import java.io.Serializable;
import javax.persistence.Basic;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToOne;
import javax.persistence.Transient;
/**
* Entity class SymbolInfo
*
* @author reed
*/
@Entity
public class SymbolInfo implements Serializable {
/**
* Determines if a de-serialized file is compatible with this class.
*
* Maintainers must change this value if and only if the new version
* of this class is not compatible with old versions. See Sun docs
* for <a href=http://java.sun.com/products/jdk/1.1/docs/guide
* /serialization/spec/version.doc.html> details. </a>
*
* Not necessary to include in first version of the class, but
* included here as a reminder of its importance.
*/
@Transient
private static final long serialVersionUID = 1L;
/** the id */
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long symbolInfoId; // NOPMD
/** the symbol */
@OneToOne
private Symbol symbol; // NOPMD
/** the name value */
@Basic
private String nameValue; // NOPMD
/** Creates a new instance of SymbolInfo. */
public SymbolInfo() {
super();
}
/** Creates a new instance of SymbolInfo.
*
* @param symbol the symbol
* @param nameValue the name value
*/
public SymbolInfo(final Symbol symbol, final String nameValue) {
super();
//Preconditions
assert symbol != null : "symbol must not be null";
assert nameValue != null : "nameValue must not be null";
assert nameValue.length() > 1 : "nameValue must be at least two characters long";
assert nameValue.charAt(0) == ':' : "symbol must have a colon as its first character " + nameValue;
this.symbol = symbol;
this.nameValue = nameValue;
}
/**
* Gets the ID of this SymbolInfo.
*
* @return the symbolInfoId
*/
public Long getSymbolInfoId() {
return this.symbolInfoId;
}
/** Gets the name value
*
* @return the name value
*/
public String getNameValue() {
return nameValue;
}
/**
* Returns a hash code value for the object.
*
* @return a hash code value for this object.
*/
@Override
public int hashCode() {
return nameValue.hashCode();
}
/**
* Determines whether another object is equal to this SymbolInfo.
*
* @param object the reference object with which to compare
* @return <code>true</code> if this object is the same as the argument;
* <code>false</code> otherwise.
*/
@Override
public boolean equals(final Object object) {
if (!(object instanceof SymbolInfo)) {
return false;
}
final SymbolInfo that = (SymbolInfo) object;
return this.nameValue.equals(that.nameValue);
}
/** Returns a string representation of this object.
*
* @return a string representation of this object
*/
@Override
public String toString() {
return nameValue;
}
/** Gets the symbol.
*
* @return the symbol
*/
public Symbol getSymbol() {
return symbol;
}
}
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