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FilterHelper.javaAPI DocHibernate 3.2.52461Mon May 08 15:59:20 BST 2006org.hibernate.util

FilterHelper

public class FilterHelper extends Object
Implementation of FilterHelper.
author
Steve Ebersole

Fields Summary
private final String[]
filterNames
private final String[]
filterConditions
Constructors Summary
public FilterHelper(Map filters, org.hibernate.dialect.Dialect dialect, org.hibernate.dialect.function.SQLFunctionRegistry functionRegistry)
The map of defined filters. This is expected to be in format where the filter names are the map keys, and the defined conditions are the values.

param
filters The map of defined filters.
param
dialect The sql dialect
param
functionRegistry The SQL function registry

		int filterCount = filters.size();
		filterNames = new String[filterCount];
		filterConditions = new String[filterCount];
		Iterator iter = filters.entrySet().iterator();
		filterCount = 0;
		while ( iter.hasNext() ) {
			final Map.Entry entry = (Map.Entry) iter.next();
			filterNames[filterCount] = (String) entry.getKey();
			filterConditions[filterCount] = Template.renderWhereStringTemplate(
					(String) entry.getValue(),
					FilterImpl.MARKER,
					dialect,
					functionRegistry
				);
			filterConditions[filterCount] = StringHelper.replace( filterConditions[filterCount],
					":",
					":" + filterNames[filterCount] + "." );
			filterCount++;
		}
Methods Summary
public booleanisAffectedBy(java.util.Map enabledFilters)

		for ( int i = 0, max = filterNames.length; i < max; i++ ) {
			if ( enabledFilters.containsKey( filterNames[i] ) ) {
				return true;
			}
		}
		return false;
public java.lang.Stringrender(java.lang.String alias, java.util.Map enabledFilters)

		StringBuffer buffer = new StringBuffer();
		render( buffer, alias, enabledFilters );
		return buffer.toString();
public voidrender(java.lang.StringBuffer buffer, java.lang.String alias, java.util.Map enabledFilters)

		if ( filterNames != null && filterNames.length > 0 ) {
			for ( int i = 0, max = filterNames.length; i < max; i++ ) {
				if ( enabledFilters.containsKey( filterNames[i] ) ) {
					final String condition = filterConditions[i];
					if ( StringHelper.isNotEmpty( condition ) ) {
						buffer.append( " and " )
								.append( StringHelper.replace( condition, FilterImpl.MARKER, alias ) );
					}
				}
			}
		}