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/*
* Distributed as part of c3p0 v.0.9.1.1
*
* Copyright (C) 2005 Machinery For Change, Inc.
*
* Author: Steve Waldman
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1, as
* published by the Free Software Foundation.
*
* This software 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. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this software; see the file LICENSE. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
package io.logspace.agent.shaded.mchange.v2.codegen.bean;
import java.util.*;
import java.io.Serializable;
import java.io.IOException;
import io.logspace.agent.shaded.mchange.v2.codegen.IndentedWriter;
import io.logspace.agent.shaded.mchange.v2.ser.IndirectPolicy;
public class IndirectingSerializableExtension extends SerializableExtension
{
protected String findIndirectorExpr;
protected String indirectorClassName;
/**
* We expect this indirector to be a public class with a public no_arg ctor;
* If you need the indirector initialized somehow, you'll have to extend
* the class.
*
* @see #writeInitializeIndirector
* @see #writeExtraDeclarations
*/
public IndirectingSerializableExtension( String indirectorClassName )
{
this.indirectorClassName = indirectorClassName;
this.findIndirectorExpr = "new " + indirectorClassName + "()";
}
protected IndirectingSerializableExtension()
{}
public Collection extraSpecificImports()
{
Collection col = super.extraSpecificImports();
col.add( indirectorClassName );
col.add( "io.logspace.agent.shaded.mchange.v2.ser.IndirectlySerialized" );
col.add( "io.logspace.agent.shaded.mchange.v2.ser.Indirector" );
col.add( "io.logspace.agent.shaded.mchange.v2.ser.SerializableUtils" );
col.add( "java.io.NotSerializableException" );
return col;
}
protected IndirectPolicy indirectingPolicy( Property prop, Class propType )
{
if (Serializable.class.isAssignableFrom( propType ))
return IndirectPolicy.DEFINITELY_DIRECT;
else
return IndirectPolicy.INDIRECT_ON_EXCEPTION;
}
/**
* hook method... does nothing by default... override at will.
* The indirector will be called, uh, "indirector".
* You are in the middle of a method when you define this.
*/
protected void writeInitializeIndirector( Property prop, Class propType, IndentedWriter iw ) throws IOException
{}
protected void writeExtraDeclarations(ClassInfo info, Class superclassType, Property[] props, Class[] propTypes, IndentedWriter iw)
throws IOException
{}
public void generate(ClassInfo info, Class superclassType, Property[] props, Class[] propTypes, IndentedWriter iw)
throws IOException
{
super.generate( info, superclassType, props, propTypes, iw);
writeExtraDeclarations( info, superclassType, props, propTypes, iw);
}
protected void writeStoreObject( Property prop, Class propType, IndentedWriter iw ) throws IOException
{
IndirectPolicy policy = indirectingPolicy( prop, propType );
if (policy == IndirectPolicy.DEFINITELY_INDIRECT)
writeIndirectStoreObject( prop, propType, iw );
else if (policy == IndirectPolicy.INDIRECT_ON_EXCEPTION)
{
iw.println("try");
iw.println("{");
iw.upIndent();
iw.println("//test serialize");
iw.println("SerializableUtils.toByteArray(" + prop.getName() + ");");
super.writeStoreObject( prop, propType, iw );
iw.downIndent();
iw.println("}");
iw.println("catch (NotSerializableException nse)");
iw.println("{");
iw.upIndent();
writeIndirectStoreObject( prop, propType, iw );
iw.downIndent();
iw.println("}");
}
else if (policy == IndirectPolicy.DEFINITELY_DIRECT)
super.writeStoreObject( prop, propType, iw );
else
throw new InternalError("indirectingPolicy() overridden to return unknown policy: " + policy);
}
protected void writeIndirectStoreObject( Property prop, Class propType, IndentedWriter iw ) throws IOException
{
iw.println("try");
iw.println("{");
iw.upIndent();
iw.println("Indirector indirector = " + findIndirectorExpr + ';');
writeInitializeIndirector( prop, propType, iw );
iw.println("oos.writeObject( indirector.indirectForm( " + prop.getName() + " ) );");
iw.downIndent();
iw.println("}");
iw.println("catch (IOException indirectionIOException)");
iw.println("{ throw indirectionIOException; }");
iw.println("catch (Exception indirectionOtherException)");
iw.println("{ throw new IOException(\"Problem indirectly serializing " + prop.getName() + ": \" + indirectionOtherException.toString() ); }");
}
protected void writeUnstoreObject( Property prop, Class propType, IndentedWriter iw ) throws IOException
{
IndirectPolicy policy = indirectingPolicy( prop, propType );
if (policy == IndirectPolicy.DEFINITELY_INDIRECT || policy == IndirectPolicy.INDIRECT_ON_EXCEPTION)
{
iw.println("Object o = ois.readObject();");
iw.println("if (o instanceof IndirectlySerialized) o = ((IndirectlySerialized) o).getObject();");
iw.println("this." + prop.getName() + " = (" + prop.getSimpleTypeName() + ") o;");
}
else if (policy == IndirectPolicy.DEFINITELY_DIRECT)
super.writeUnstoreObject( prop, propType, iw );
else
throw new InternalError("indirectingPolicy() overridden to return unknown policy: " + policy);
}
}
