org.hibernate.persister.entity.AbstractPropertyMapping Maven / Gradle / Ivy

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//$Id: AbstractPropertyMapping.java 10851 2006-11-21 17:38:43Z [email protected] $
package org.hibernate.persister.entity;

import java.util.HashMap;
import java.util.Map;

import org.hibernate.MappingException;
import org.hibernate.QueryException;
import org.hibernate.engine.Mapping;
import org.hibernate.sql.Template;
import org.hibernate.type.AbstractComponentType;
import org.hibernate.type.AssociationType;
import org.hibernate.type.EntityType;
import org.hibernate.type.Type;
import org.hibernate.util.ArrayHelper;
import org.hibernate.util.StringHelper;

/**
 * Base implementation of a PropertyMapping
 *
 * @author Gavin King
 */
public abstract class AbstractPropertyMapping implements PropertyMapping {

	private final Map typesByPropertyPath = new HashMap();
	private final Map columnsByPropertyPath = new HashMap();
	private final Map formulaTemplatesByPropertyPath = new HashMap();

	public String[] getIdentifierColumnNames() {
		throw new UnsupportedOperationException("one-to-one is not supported here");
	}

	protected abstract String getEntityName();

	public Type toType(String propertyName) throws QueryException {
		Type type = (Type) typesByPropertyPath.get(propertyName);
		if ( type == null ) {
			throw propertyException( propertyName );
		}
		return type;
	}

	protected final QueryException propertyException(String propertyName) {
		return new QueryException( "could not resolve property: " + propertyName + " of: " + getEntityName() );
	}
	
	public String[] getColumnNames(String propertyName) {
		String[] cols = (String[]) columnsByPropertyPath.get(propertyName);
		if (cols==null) {
			throw new MappingException("unknown property: " + propertyName);
		}
		return cols;
	}

	public String[] toColumns(String alias, String propertyName) throws QueryException {
		//TODO: *two* hashmap lookups here is one too many...
		String[] columns = (String[]) columnsByPropertyPath.get(propertyName);
		if ( columns == null ) {
			throw propertyException( propertyName );
		}
		String[] templates = (String[]) formulaTemplatesByPropertyPath.get(propertyName);
		String[] result = new String[columns.length];
		for ( int i=0; i