/*
* 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.expr.AmberExpr;
import com.caucho.amber.expr.EmbeddedExpr;
import com.caucho.amber.expr.PathExpr;
import com.caucho.amber.query.QueryParser;
import com.caucho.amber.table.AmberTable;
import com.caucho.amber.type.EmbeddableType;
import com.caucho.amber.type.EntityType;
import com.caucho.amber.type.AmberType;
import com.caucho.config.ConfigException;
import com.caucho.java.JavaWriter;
import com.caucho.util.CharBuffer;
import com.caucho.util.L10N;
import java.io.IOException;
import java.util.ArrayList;
import java.util.logging.Logger;
/**
* Configuration for a bean's embedded field
*/
public class EntityEmbeddedField extends AbstractField
{
private static final L10N L = new L10N(EntityEmbeddedField.class);
protected static final Logger log
= Logger.getLogger(EntityEmbeddedField.class.getName());
private EmbeddableType _embeddableType;
private ArrayList<EmbeddedSubField> _subFields;
private boolean _isInsert = true;
private boolean _isUpdate = true;
public EntityEmbeddedField(EntityType ownerType,
EmbeddableType embeddableType,
String name)
throws ConfigException
{
super(ownerType, name);
setEmbeddableType(embeddableType);
}
public EntityEmbeddedField(EntityType ownerType,
EmbeddableType embeddableType)
{
super(ownerType);
setEmbeddableType(embeddableType);
}
public EmbeddableType getEmbeddableType()
{
return _embeddableType;
}
/**
* Sets the result type.
*/
public void setEmbeddableType(EmbeddableType type)
{
_embeddableType = type;
_subFields = new ArrayList<EmbeddedSubField>();
ArrayList<AmberField> fields = type.getFields();
for (int i = 0; i < fields.size(); i++) {
_subFields.add(createSubField(fields.get(i), i));
}
}
protected EmbeddedSubField createSubField(AmberField field, int index)
{
return new EmbeddedSubField(this, field, index);
}
/**
* Sets the result type.
*/
public AmberType getType()
{
return _embeddableType;
}
/**
* Returns the subfields.
*/
public ArrayList<EmbeddedSubField> getSubFields()
{
return _subFields;
}
/**
* Returns true if the property is an @EmbeddedId.
*/
public boolean isEmbeddedId()
{
return false;
}
/**
* Set true if the property should be saved on an insert.
*/
public void setInsert(boolean isInsert)
{
_isInsert = isInsert;
}
/**
* Set true if the property should be saved on an update.
*/
public void setUpdate(boolean isUpdate)
{
_isUpdate = isUpdate;
}
/**
* Initializes the property.
*/
public void init()
throws ConfigException
{
super.init();
}
/**
* Returns the null value.
*/
public String generateNull()
{
return getType().generateNull();
}
/**
* Generates the set property.
*/
public void generateGetterMethod(JavaWriter out)
throws IOException
{
if (! isFieldAccess() && getGetterMethod() == null)
return;
out.println();
out.println("public " + getJavaTypeName() + " " + getGetterName() + "()");
out.println("{");
out.pushDepth();
// XXX: must not load the entity to return the pk. Avoids StackOverflow.
if (! (this instanceof EmbeddedIdField)) {
out.println("if (__caucho_session != null)");
out.println(" __caucho_load_" + getLoadGroupIndex() + "(__caucho_session);");
out.println();
}
out.println("return " + generateSuperGetter("this") + ";");
out.popDepth();
out.println("}");
}
/**
* Generates the set property.
*/
@Override
public void generateSetterMethod(JavaWriter out)
throws IOException
{
if (! isFieldAccess() && (getGetterMethod() == null
|| getSetterMethod() == null && ! isAbstract()))
return;
out.println();
out.println("public void " + getSetterName() + "(" + getJavaTypeName() + " v)");
out.println("{");
out.pushDepth();
if (! _isUpdate) {
out.println("if (__caucho_session == null)");
out.println(" " + generateSuperSetter("this", "v") + ";");
}
else {
out.println(getJavaTypeName() + " oldValue = " + generateSuperGetter("this") + ";");
int maskGroup = getLoadGroupIndex() / 64;
String loadVar = "__caucho_loadMask_" + maskGroup;
long mask = 1L << (getLoadGroupIndex() % 64);
if (getJavaTypeName().equals("java.lang.String")) {
out.println("if ((oldValue == v || v != null && v.equals(oldValue)) && (" + loadVar + " & " + mask + "L) != 0L)");
out.println(" return;");
}
else {
out.println("if (oldValue == v && (" + loadVar + " & " + mask + "L) != 0)");
out.println(" return;");
}
out.println(generateSuperSetter("this", "v") + ";");
int dirtyGroup = getIndex() / 64;
String dirtyVar = "__caucho_dirtyMask_" + dirtyGroup;
long dirtyMask = 1L << (getIndex() % 64);
out.println();
out.println("long oldMask = " + dirtyVar + ";");
out.println(dirtyVar + " |= " + dirtyMask + "L;");
out.println();
out.println("if (__caucho_session != null && oldMask == 0)");
out.println(" __caucho_session.update(this);");
}
out.popDepth();
out.println("}");
}
/**
* Generates code to copy to an object.
*/
public void generateCopy(JavaWriter out,
String dest,
String source)
throws IOException
{
// XXX: how to make a new instance?
String value = generateGet(source);
out.println(generateSet(dest, value) + ";");
}
/**
* Generates the select clause.
*/
public String generateLoadSelect(AmberTable table, String id)
{
if (getTable() != table)
return null;
else
return generateSelect(id);
}
/**
* Generates the select clause.
*/
public String generateSelect(String id)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < _subFields.size(); i++) {
if (i > 0)
sb.append(", ");
sb.append(_subFields.get(i).generateSelect(id));
}
return sb.toString();
}
/**
* Generates the where clause.
*/
public String generateWhere(String id)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < _subFields.size(); i++) {
if (i > 0)
sb.append(" and ");
sb.append(_subFields.get(i).generateWhere(id));
}
return sb.toString();
}
/**
* Generates the insert.
*/
public void generateInsertColumns(ArrayList<String> columns)
{
if (_isInsert) {
for (int i = 0; i < _subFields.size(); i++) {
_subFields.get(i).generateInsertColumns(columns);
}
}
}
/**
* Generates the update set clause
*/
public void generateUpdate(CharBuffer sql)
{
if (_isUpdate) {
boolean isFirst = true;
for (int i = 0; i < _subFields.size(); i++) {
if (i > 0)
sql.append(", ");
_subFields.get(i).generateUpdate(sql);
}
}
}
/**
* Generates the set clause for the insert clause.
*/
public void generateInsertSet(JavaWriter out, String pstmt,
String index, String obj)
throws IOException
{
if (_isInsert)
generateStatementSet(out, pstmt, index, obj);
else if (getLoadGroupIndex() != 0) {
int groupIndex = getLoadGroupIndex();
int group = groupIndex / 64;
long groupMask = 1L << (groupIndex % 64);
out.println("__caucho_loadMask_" + group + " &= ~" + groupMask + "L;");
}
}
/**
* Generates the set clause for the insert clause.
*/
public void generateUpdateSet(JavaWriter out, String pstmt,
String index, String obj)
throws IOException
{
if (_isUpdate)
generateStatementSet(out, pstmt, index, obj);
}
/**
* Generates the set clause.
*/
public void generateStatementSet(JavaWriter out, String pstmt,
String index, String obj)
throws IOException
{
if (! isFieldAccess() && getGetterMethod() == null)
return;
for (int i = 0; i < _subFields.size(); i++) {
}
/*
for (Map.Entry<String, Column> entry : _columns.entrySet()) {
Column column = entry.getValue();
String getter = _fieldNameByColumn.get(column.getName());
EmbeddableType embeddableType = getEmbeddableType();
if (! getSourceType().isFieldAccess())
getter = "get" + Character.toUpperCase(getter.charAt(0)) +
getter.substring(1) + "()";
out.println("if (" + generateGet(obj) + " == null) {");
out.pushDepth();
// embeddableType.generateSetNull(out, pstmt, "index++");
column.generateStatementSet(out, pstmt, index, null);
out.popDepth();
out.println("} else");
out.pushDepth();
column.generateStatementSet(out, pstmt, index, generateGet(obj)+"."+getter);
out.popDepth();
}
*/
}
/**
* Generates get property.
*/
public void generateGetPrimaryKey(CharBuffer cb)
{
if (! isFieldAccess() && getGetterMethod() == null)
return;
/*
String thisGetter = generateGet("this");
EmbeddableType embeddableType = getEmbeddableType();
ArrayList<AmberField> fields = embeddableType.getFields();
for (int i = 0; i < fields.size(); i++) {
if (i != 0)
cb.append(", ");
AmberField field = fields.get(i);
String getter = field.getName();
if (! getSourceType().isFieldAccess()) {
getter = "get" + Character.toUpperCase(getter.charAt(0)) +
getter.substring(1) + "()";
}
cb.append(thisGetter + "." + getter);
}
*/
}
/**
* Generates loading code
*/
@Override
public int generateLoad(JavaWriter out, String rs,
String indexVar, int index)
throws IOException
{
/*
String var = "amber_ld_embedded" + index;
out.print(getJavaTypeName());
out.println(" " + var + " = new "+getJavaTypeName()+"();");
*/
// jpa/0w01
String value = (_embeddableType.getJavaTypeName()
+ ".__caucho_make(aConn, rs, "
+ indexVar + " + " + index + ")");
// XXX: should cound
index += _subFields.size();
out.println(generateSuperSetter("this", value) + ";");
// out.println("__caucho_loadMask |= " + (1L << getIndex()) + "L;");
return index;
}
/**
* Creates the expression for the field.
*/
@Override
public AmberExpr createExpr(QueryParser parser, PathExpr parent)
{
return new EmbeddedExpr(parent, _embeddableType, _subFields);
}
}