// $Id: ListChoice.java 48 2006-07-12 16:15:40Z caron $
/*
* Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
* Access and use of this software shall impose the following obligations
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* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
* documentation for any purpose whatsoever, provided that this entire
* notice appears in all copies of the software, derivative works and
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package thredds.catalog.query;
import thredds.catalog.InvDocumentation;
import java.util.*;
/**
* Implementation of a thredds query choice element.
*
* @author john caron
*/
public class ListChoice implements Choice {
private Selector parent;
private String name, value;
private ArrayList nestedSelectors = new ArrayList();
private InvDocumentation desc;
/**
* Construct from fields in XML catalog.
* @param parent parent selector
* @param name choice name - display to user
* @param value choice value - send to server
*/
public ListChoice( Selector parent, String name, String value, String description) {
this.parent = parent;
this.name = name;
this.value = value;
if (description != null) {
setDescription( new InvDocumentation(null, null, null, null, description));
}
}
public String getName() { return name; }
public String getValue() { return value; }
public Selector getParentSelector() { return parent; }
public String getTemplate() { return parent.getTemplate(); }
public void addNestedSelector( SelectList s) { nestedSelectors.add(s); }
public ArrayList getNestedSelectors() { return nestedSelectors; }
public boolean hasNestedSelectors() { return nestedSelectors.size() > 0; }
public void setDescription( InvDocumentation desc) { this.desc = desc; }
public InvDocumentation getDescription() { return desc; }
public String toString() { return name; }
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof ListChoice)) return false;
return o.hashCode() == this.hashCode();
}
/** Override Object.hashCode() to implement equals. */
public int hashCode() {
if (hashCode == 0) {
int result = 17;
result = 37*result + getName().hashCode();
result = 37*result + getValue().hashCode();
if (getTemplate() != null)
result = 37*result + getTemplate().hashCode();
if (getDescription() != null)
result = 37*result + getDescription().hashCode();
if (hasNestedSelectors())
result = 37*result + getNestedSelectors().hashCode();
hashCode = result;
}
return hashCode;
}
private volatile int hashCode = 0; // Bloch, item 8
}