BaseDataTypeSerializer.java
/*
** Module : BaseDataTypeSerializer.java
** Abstract : A serializer and parser for BaseDataType instances.
**
** Copyright (c) 2022, Golden Code Development Corporation.
**
** -#- -I- --Date-- ---------------------------------------Description----------------------------------------
** 001 CA 20220323 Created initial version.
** TJD 20220504 Java 11 compatibility minor changes
*/
/*
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU Affero General Public License as
** published by the Free Software Foundation, either version 3 of the
** License, or (at your option) any later version.
**
** This program 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 Affero General Public License for more details.
**
** You may find a copy of the GNU Affero GPL version 3 at the following
** location: https://www.gnu.org/licenses/agpl-3.0.en.html
**
** Additional terms under GNU Affero GPL version 3 section 7:
**
** Under Section 7 of the GNU Affero GPL version 3, the following additional
** terms apply to the works covered under the License. These additional terms
** are non-permissive additional terms allowed under Section 7 of the GNU
** Affero GPL version 3 and may not be removed by you.
**
** 0. Attribution Requirement.
**
** You must preserve all legal notices or author attributions in the covered
** work or Appropriate Legal Notices displayed by works containing the covered
** work. You may not remove from the covered work any author or developer
** credit already included within the covered work.
**
** 1. No License To Use Trademarks.
**
** This license does not grant any license or rights to use the trademarks
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** of Golden Code Development Corporation. You are not authorized to use the
** name Golden Code, FWD, or the names of any author or contributor, for
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**
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**
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**
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** versions of the covered work must be marked in a reasonable way to make it
** clear that the modified work is not originating from Golden Code Development
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** attribution required in this license.
*/
package com.goldencode.p2j.rest.serializers;
import java.math.*;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.node.*;
import com.goldencode.p2j.rest.*;
import com.goldencode.p2j.util.*;
/**
* A parser and serializer for {@link BaseDataType} instances.
*/
public class BaseDataTypeSerializer
extends JavaTypeSerializer<BaseDataType>
{
/**
* Create a new serializer for {@link BaseDataType} instances.
*/
public BaseDataTypeSerializer()
{
super(BaseDataType.class);
}
/**
* Create an initial (default) instance for this serializer.
* <p>
* Can be null for non-mutable instances.
*
* @param definitionType
* The type as it appears at the parameter's definition.
*
* @return <code>null</code> for immutable types, a Java native value for native types or a new instance,
* for mutable types.
*
* @throws InstantiationException
* @throws IllegalAccessException
*/
@Override
public BaseDataType initialize(Class<? extends BaseDataType> definitionType)
throws ReflectiveOperationException
{
return newInstance(definitionType, () -> new unknown());
}
/**
* Parse the string JSON representation and assign it to the given argument. If null or not mutable, a
* new instance will be created.
*
* @param arg
* The argument (obtained via {@link #initialize}.
* @param sval
* The string JSON representation of this argument.
*
* @return The argument instance.
*
* @throws RequestArgumentError
* If the argument can't be parsed.
*/
@Override
public BaseDataType fromJson(BaseDataType arg, String sval)
throws RequestArgumentError
{
if (arg instanceof unknown)
{
return arg;
}
String typeName = arg.getTypeName();
JavaTypeSerializer serializer = getBaseSerializer(typeName);
if (serializer == null)
{
throw new RuntimeException("No serializer registered for " + arg.getClass().getName());
}
Object val;
try
{
val = serializer.initialize(serializer.getType());
}
catch (ReflectiveOperationException e)
{
throw new RequestArgumentError("Could not initialize value in serializer " + serializer.getType());
}
val = serializer.fromJson(val, sval);
BaseDataType.Type type = BaseDataType.Type.of(typeName);
switch (type)
{
case CHARACTER:
case LONGCHAR:
case CLOB:
((Text) arg).assign((String) val);
break;
case DATE:
case DATETIME:
case DATETIMETZ:
case DATETIME_TZ:
((date) arg).fromIso((String) val);
break;
case LOGICAL:
((logical) arg).assign((Boolean) val);
break;
case DECIMAL:
((decimal) arg).assign((BigDecimal) val);
break;
case INTEGER:
((integer) arg).assign((Integer) val);
break;
case INT64:
((int64) arg).assign((Long) val);
break;
case BLOB:
case RAW:
((BinaryData) arg).assign((byte[]) val);
break;
case RECID:
((recid) arg).assign((Long) val);
break;
case ROWID:
((rowid) arg).assign((String) val);
break;
}
return arg;
}
/**
* Serialize the given instance to JSON.
*
* @param val
* The instance to serialize.
*
* @return The JSON representation of this instance.
*/
@Override
public JsonNode toJson(BaseDataType val)
{
if (val == null || val.isUnknown())
{
return JsonNodeFactory.instance.nullNode();
}
Object oval = null;
BaseDataType.Type type = BaseDataType.Type.of(val.getTypeName());
switch (type)
{
case UNKNOWN:
oval = null;
break;
case CHARACTER:
case LONGCHAR:
case CLOB:
oval = ((Text) val).toJavaType();
break;
case COMHANDLE:
case COM_HANDLE:
case OBJECT:
case JOBJECT:
case HANDLE:
case TABLE_HANDLE:
case DATASET_HANDLE:
case MEMPTR:
throw new RuntimeException("No serializer registered for " + val.getClass().getName());
case DATE:
case DATETIME:
case DATETIMETZ:
case DATETIME_TZ:
oval = ((date) val).getIsoDate();
break;
case LOGICAL:
oval = ((logical) val).toJavaType();
break;
case DECIMAL:
oval = ((decimal) val).toJavaType();
break;
case INTEGER:
oval = ((integer) val).toJavaIntegerType();
break;
case INT64:
oval = ((int64) val).toJavaLongType();
break;
case BLOB:
case RAW:
oval = ((BinaryData) val).getByteArray();
break;
case RECID:
oval = ((recid) val).toJavaLongType();
break;
case ROWID:
oval = ((rowid) val).toStringMessage();
break;
}
if (oval == null)
{
return JsonNodeFactory.instance.nullNode();
}
JavaTypeSerializer serializer = getSerializer(oval.getClass().getTypeName());
return serializer.toJson(oval);
}
/**
* Get the dedicated serializer for the specified {@link BaseDataType} implementation, which will be used
* to convert the JSON text to a Java instance, to which the {@link BaseDataType} instance will be
* assigned.
*
* @param typeName
* The type name, as returned by {@link BaseDataType#getTypeName()}.
*
* @return The associated serializer, or <code>null</code> if the type is not supported.
*/
private JavaTypeSerializer getBaseSerializer(String typeName)
{
BaseDataType.Type type = BaseDataType.Type.of(typeName);
JavaTypeSerializer serializer = null;
switch (type)
{
case UNKNOWN:
serializer = null;
break;
case CHARACTER:
case LONGCHAR:
case CLOB:
serializer = STRING_SERIALIZER;
break;
case COMHANDLE:
case COM_HANDLE:
case OBJECT:
case JOBJECT:
case HANDLE:
case TABLE_HANDLE:
case DATASET_HANDLE:
case MEMPTR:
serializer = null;
break;
case DATE:
case DATETIME:
case DATETIMETZ:
case DATETIME_TZ:
serializer = STRING_SERIALIZER;
break;
case LOGICAL:
serializer = BOOLEAN_SERIALIZER;
break;
case DECIMAL:
serializer = BIGDECIMAL_SERIALIZER;
break;
case INTEGER:
serializer = INTEGER_SERIALIZER;
break;
case INT64:
serializer = LONG_SERIALIZER;
break;
case BLOB:
case RAW:
serializer = BYTEARRAY_SERIALIZER;
break;
case RECID:
serializer = LONG_SERIALIZER;
break;
case ROWID:
serializer = STRING_SERIALIZER;
break;
}
return serializer;
}
}