/*
* 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.cfg.AbstractConfigIntrospector;
import com.caucho.amber.expr.AmberExpr;
import com.caucho.amber.expr.ColumnExpr;
import com.caucho.amber.expr.EmbeddedExpr;
import com.caucho.amber.expr.PathExpr;
import com.caucho.amber.query.QueryParser;
import com.caucho.amber.table.AmberColumn;
import com.caucho.amber.table.ForeignColumn;
import com.caucho.amber.table.AmberTable;
import com.caucho.amber.type.*;
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 field
*/
public class PropertyField extends AbstractField {
private static final L10N L = new L10N(PropertyField.class);
private static final Logger log
= Logger.getLogger(PropertyField.class.getName());
private AmberColumn _column;
private AmberType _type;
private KeyManyToOneField _aliasKey;
private boolean _isInsert = true;
private boolean _isUpdate = true;
public PropertyField(BeanType statefulType,
String name)
throws ConfigException
{
super(statefulType, name);
}
public PropertyField(BeanType statefulType)
{
super(statefulType);
}
/**
* Sets the result type.
*/
public void setType(AmberType type)
{
_type = type;
}
/**
* Sets the result type.
*/
public AmberType getType()
{
return _type;
}
/**
* Returns the source type as
* entity or mapped-superclass.
*/
public EntityType getRelatedSourceType()
{
return (EntityType) getSourceType();
}
/**
* Returns the table containing the field's columns.
*/
@Override
public AmberTable getTable()
{
return getColumn().getTable();
}
/**
* Sets the column.
*/
@Override
public void setColumn(AmberColumn column)
{
_column = column;
}
/**
* Gets the column.
*/
@Override
public AmberColumn getColumn()
{
return _column;
}
/**
* Set true if the property should be saved on an insert.
*/
public void setInsert(boolean isInsert)
{
_isInsert = isInsert;
}
public boolean isInsert()
{
return _isInsert;
}
/**
* Set true if the property should be saved on an update.
*/
public void setUpdate(boolean isUpdate)
{
_isUpdate = isUpdate;
}
public boolean isUpdate()
{
return _isUpdate;
}
/**
* Creates a copy of the field for a parent
*/
@Override
public AmberField override(BeanType type)
{
PropertyField field = new PropertyField(getSourceType(), getName());
field.setOverride(true);
field.setLazy(isLazy());
field.setInsert(_isInsert);
field.setUpdate(_isUpdate);
return field;
}
/**
* Initializes the property.
*/
@Override
public void init()
throws ConfigException
{
super.init();
if (getColumn() == null)
throw new IllegalStateException(L.l("column must be set before init"));
// Embedded types have no id.
// Only entity or mapped-superclass types have id.
if (! (getSourceType() instanceof EntityType))
return;
if (getRelatedSourceType().getId() != null) {
// resolve any alias
for (AmberField field : getRelatedSourceType().getId().getKeys()) {
if (field instanceof KeyManyToOneField) {
KeyManyToOneField key = (KeyManyToOneField) field;
for (ForeignColumn column : key.getLinkColumns().getColumns()) {
if (getColumn().getName().equals(column.getName()))
_aliasKey = key;
}
}
}
}
}
//
// getter/setter
//
/**
* Generates the set property.
*/
@Override
public void generateGetterMethod(JavaWriter out)
throws IOException
{
if (! isFieldAccess() && getGetterMethod() == null)
return;
out.println();
out.println("public " + getJavaTypeName() + " " + getGetterName() + "()");
out.println("{");
out.pushDepth();
if (! (getSourceType() instanceof EmbeddableType)) {
out.println("if (__caucho_session != null)");
out.println(" __caucho_load_select_" + 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();
int maskGroup = getLoadGroupIndex() / 64;
String loadVar = "__caucho_loadMask_" + maskGroup;
long mask = 1L << (getLoadGroupIndex() % 64);
// jpa/0gh0
if (! _isUpdate || getSourceType() instanceof EmbeddableType) {
out.println(generateSuperSetter("this", "v") + ";");
out.popDepth();
out.println("}");
return;
}
out.println("if (__caucho_session == null) {");
out.println(" " + generateSuperSetter("this", "v") + ";");
out.println(" return;");
out.println("}");
// jpa/0g06, jpa/0g0k, jpa/0j5f
out.println();
out.println("if ((" + loadVar + " & " + mask + "L) == 0) {");
out.println(" __caucho_load_" + maskGroup + "(__caucho_session);");
//out.println();
//out.println(" if (__caucho_session.isActiveTransaction())");
//out.println(" __caucho_session.makeTransactional((com.caucho.amber.entity.Entity) this);");
out.println("}");
out.println();
out.println(getJavaTypeName() + " oldValue = " + generateSuperGetter("this") + ";");
out.println();
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();
out.println("try {");
out.pushDepth();
out.println(generateSuperSetter("this", "v") + ";");
out.popDepth();
out.println("} catch (Exception e1) {");
out.pushDepth();
out.println("throw __caucho_session.rollback(e1);");
out.popDepth();
out.println("}");
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 (oldMask == 0)");
out.println(" __caucho_session.update((com.caucho.amber.entity.Entity) this);");
out.println();
out.println("__caucho_increment_version();");
out.popDepth();
out.println("}");
}
/**
* Returns the null value.
*/
@Override
public String generateNull()
{
return getType().generateNull();
}
/**
* Returns the field name.
*/
@Override
protected String getFieldName()
{
if (isFieldAccess())
return super.getFieldName();
else if (getColumn() == null) {
// jpa/0w01, jpa/0w10
return "__amber_" + AbstractConfigIntrospector.toSqlName(getName());
}
else
return getColumn().getFieldName();
}
/**
* Generates the select clause.
*/
@Override
public String generateLoadSelect(AmberTable table, String id)
{
if (getColumn().getTable() != table) {
// jpa/0l14 as a negative test
if (getRelatedSourceType() instanceof EntityType)
return null;
}
return generateSelect(id);
}
/**
* Generates the select clause.
*/
@Override
public String generateSelect(String id)
{
return getColumn().generateSelect(id);
}
/**
* Generates the where clause.
*/
@Override
public String generateWhere(String id)
{
return getColumn().generateSelect(id);
}
/**
* Generates the insert.
*/
@Override
public void generateInsertColumns(ArrayList<String> columns)
{
if (_isInsert && _aliasKey == null)
columns.add(getColumn().getName());
}
/**
* Generates the update set clause
*/
@Override
public void generateUpdate(CharBuffer sql)
{
if (_isUpdate && _aliasKey == null)
sql.append(getColumn().generateUpdateSet());
/*
sql.append(getColumn());
sql.append("=?");
*/
}
/**
* Generates the set clause for the insert clause.
*/
@Override
public void generateInsertSet(JavaWriter out, String pstmt,
String index, String obj)
throws IOException
{
if (_aliasKey != null) {
}
else 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.
*/
@Override
public void generateUpdateSet(JavaWriter out, String pstmt,
String index, String obj)
throws IOException
{
if (_isUpdate && _aliasKey == null)
generateStatementSet(out, pstmt, index, obj);
}
/**
* Generates the set clause.
*/
@Override
public void generateStatementSet(JavaWriter out, String pstmt,
String index, String obj)
throws IOException
{
// XXX: need to find QA explaining the following test
if (! isFieldAccess() && getGetterMethod() == null || _aliasKey != null)
return;
getColumn().generateSet(out, pstmt, index, generateGet(obj));
}
/**
* Generates loading code
*/
@Override
public int generateLoad(JavaWriter out, String rs,
String indexVar, int index)
throws IOException
{
if (_aliasKey != null)
return index;
/*
if (getSetterMethod() == null)
return index;
*/
String var = "amber_ld" + index;
AmberType columnType;
// jpa/0w24
if (getColumn() == null)
columnType = getType();
else
columnType = getColumn().getType();
if (columnType instanceof AmberArrayType)
out.print(((AmberArrayType) columnType).getPrimitiveArrayTypeName());
else
out.print(getJavaTypeName());
out.print(" " + var + " = ");
// jpa/0w24
if (getColumn() == null)
index = getType().generateLoad(out, rs, indexVar, index);
else
index = getColumn().generateLoad(out, rs, indexVar, index);
out.println(";");
// jpa/1417 as a negative test.
if (columnType instanceof AmberArrayType) {
AmberArrayType arrayType = (AmberArrayType) columnType;
String primitiveType = arrayType.getPrimitiveArrayTypeName();
out.print(getJavaTypeName() + " " + var + "_temp = null;");
out.println();
// jpa/110d
out.print("if (" + var + " != null) {");
out.pushDepth();
out.print(var + "_temp = new ");
String instanceJavaType = arrayType.getJavaObjectTypeName();
out.println(instanceJavaType + "[" + var + ".length];");
out.println("for (int i=0; i < " + var + ".length; i++)");
out.print(" " + var + "_temp[i] = new ");
out.print(instanceJavaType);
out.println("(" + var + "[i]);");
out.popDepth();
out.println("}");
out.println();
out.println(generateSuperSetter("this", var + "_temp") + ";");
}
else
out.println(generateSuperSetter("this", var) + ";");
// out.println("__caucho_loadMask |= " + (1L << getIndex()) + "L;");
return index;
}
/**
* Generates loading code
*/
@Override
public int generateLoadNative(JavaWriter out, int index)
throws IOException
{
if (_aliasKey != null || getColumn() == null)
return index;
String var = "amber_ld" + index;
AmberType columnType;
columnType = getColumn().getType();
out.print(getJavaTypeName());
out.print(" " + var + " = ");
// jpa/0w24
index = getColumn().generateLoadNative(out, index);
out.println(";");
out.println(generateSuperSetter("this", var) + ";");
return index;
}
/**
* Generates loading code
*/
@Override
public void generateNativeColumnNames(ArrayList<String> names)
{
if (_aliasKey != null || getColumn() == null)
return;
getColumn().generateNativeColumnNames(names);
}
/**
* Creates the expression for the field.
*/
@Override
public AmberExpr createExpr(QueryParser parser, PathExpr parent)
{
AmberColumn column;
if (parent instanceof EmbeddedExpr) {
column = ((EmbeddedExpr) parent).getColumnByFieldName(getName());
}
else
column = getColumn();
return new ColumnExpr(parent, column);
}
}