/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source 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.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.amber.field;
import com.caucho.amber.table.AmberColumn;
import com.caucho.amber.type.EntityType;
import com.caucho.bytecode.JMethod;
import com.caucho.bytecode.JTypeWrapper;
import com.caucho.config.ConfigException;
import com.caucho.java.JavaWriter;
import com.caucho.util.L10N;
import java.io.IOException;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Represents a map to entities.
*/
public class EntityMapField extends AbstractField {
private static final L10N L = new L10N(EntityMapField.class);
protected static final Logger log
= Logger.getLogger(EntityMapField.class.getName());
private ArrayList<AmberColumn> _indexColumns;
private JMethod _mapMethod;
private EntityType _targetType;
private IdField _id;
private IdField _index;
public EntityMapField(EntityType entityType)
{
super(entityType);
}
/**
* Sets the field name.
*/
@Override
public void setName(String name)
{
// hack for EJB maps
try {
super.setName(name);
} catch (ConfigException e) {
log.log(Level.FINEST, e.toString(), e);
}
ClassLoader loader = Thread.currentThread().getContextClassLoader();
setJavaType(JTypeWrapper.create(java.util.Map.class, loader));
}
/**
* Sets the target type.
*/
public void setTargetType(EntityType type)
{
_targetType = type;
}
/**
* Returns true if the methods are abstract.
*/
@Override
public boolean isUpdateable()
{
return false;
}
/**
* Sets the map method.
*/
public void setMapMethod(JMethod method)
{
_mapMethod = method;
}
/**
* Sets the id field.
*/
public void setId(IdField id)
{
_id = id;
}
/**
* Sets the index field.
*/
public void setIndex(IdField index)
{
_index = index;
}
/**
* Sets the index columns.
*/
public void setIndexColumns(ArrayList<AmberColumn> columns)
{
_indexColumns = columns;
}
/**
* Sets the index columns.
*/
public ArrayList<AmberColumn> getIndexColumns()
{
return _indexColumns;
}
/**
* Generates loading cache
*/
@Override
public void generateUpdate(JavaWriter out, String mask, String pstmt,
String index)
throws IOException
{
}
/**
* Generates loading cache
*/
@Override
public void generateLoadFromObject(JavaWriter out, String obj)
throws IOException
{
}
/**
* Generates loading cache
*/
@Override
public void generateUpdateFromObject(JavaWriter out, String obj)
throws IOException
{
}
/**
* Generates the select clause.
*/
public String generateLoadSelect(String id)
{
return null;
}
/**
* Updates the cached copy.
*/
@Override
public void generateCopyUpdateObject(JavaWriter out,
String dst, String src,
int updateIndex)
throws IOException
{
}
/**
* Updates the cached copy.
*/
@Override
public void generateCopyLoadObject(JavaWriter out,
String dst, String src,
int loadIndex)
throws IOException
{
}
/**
* Generates the get property.
*/
@Override
public void generateSuperGetterMethod(JavaWriter out)
throws IOException
{
}
/**
* Generates the get property.
*/
@Override
public void generateSuperSetterMethod(JavaWriter out)
throws IOException
{
}
/**
* Generates the set property.
*/
@Override
public void generateGetterMethod(JavaWriter out)
throws IOException
{
if (getGetterMethod() != null) {
out.println();
out.println("public " + getJavaTypeName() + " " + getGetterName() + "()");
out.println("{");
out.pushDepth();
out.println("return null;");
out.popDepth();
out.println("}");
}
if (_mapMethod != null) {
out.println();
out.print("public ");
out.print(_mapMethod.getReturnType().getPrintName());
out.print(" " + _mapMethod.getName() + "(");
out.print(_mapMethod.getParameterTypes()[0].getPrintName());
out.println(" a0)");
out.println("{");
out.pushDepth();
out.println("if (__caucho_session == null)");
out.println(" return null;");
out.println();
out.println("try {");
out.pushDepth();
out.println("com.caucho.amber.AmberQuery query;");
EntityType targetType = _targetType;
String table = targetType.getName();
out.print("String sql = \"SELECT o");
out.print(" FROM " + table + " o");
out.print(" WHERE ");
EntityType sourceType = (EntityType) getSourceType();
ArrayList<IdField> keys = sourceType.getId().getKeys();
out.print("o." + _index.getName() + "=?1");
for (int i = 0; i < keys.size(); i++) {
IdField key = keys.get(i);
out.print(" and ");
out.print("o." + _id.getName() + "." + key.getName() + "=?" + (i + 2));
}
out.println("\";");
out.println("query = __caucho_session.prepareQuery(sql);");
out.println("int index = 1;");
_index.getType().generateSet(out, "query", "index", "a0");
for (int i = 0; i < keys.size(); i++) {
IdField key = keys.get(i);
key.generateStatementSet(out, "query", "index", "this");
}
out.print("return (");
out.print(_mapMethod.getReturnType().getPrintName());
out.println(") query.getSingleResult();");
out.popDepth();
out.println("} catch (Exception e) {");
out.println(" throw com.caucho.amber.AmberRuntimeException.create(e);");
out.println("}");
out.popDepth();
out.println("}");
}
}
}