/*
Derby - Class org.apache.derby.impl.sql.catalog.SYSKEYSRowFactory
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to you under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package org.apache.derby.impl.sql.catalog;
import org.apache.derby.catalog.UUID;
import org.apache.derby.iapi.error.StandardException;
import org.apache.derby.iapi.services.sanity.SanityManager;
import org.apache.derby.iapi.services.uuid.UUIDFactory;
import org.apache.derby.iapi.sql.dictionary.CatalogRowFactory;
import org.apache.derby.iapi.sql.dictionary.DataDescriptorGenerator;
import org.apache.derby.iapi.sql.dictionary.DataDictionary;
import org.apache.derby.iapi.sql.dictionary.KeyConstraintDescriptor;
import org.apache.derby.iapi.sql.dictionary.SubKeyConstraintDescriptor;
import org.apache.derby.iapi.sql.dictionary.SystemColumn;
import org.apache.derby.iapi.sql.dictionary.TupleDescriptor;
import org.apache.derby.iapi.sql.execute.ExecRow;
import org.apache.derby.iapi.sql.execute.ExecutionFactory;
import org.apache.derby.iapi.types.DataValueDescriptor;
import org.apache.derby.iapi.types.DataValueFactory;
import org.apache.derby.iapi.types.SQLChar;
/**
* Factory for creating a SYSKEYS row.
*
*/
public class SYSKEYSRowFactory extends CatalogRowFactory
{
private static final String TABLENAME_STRING = "SYSKEYS";
protected static final int SYSKEYS_COLUMN_COUNT = 2;
protected static final int SYSKEYS_CONSTRAINTID = 1;
protected static final int SYSKEYS_CONGLOMERATEID = 2;
protected static final int SYSKEYS_INDEX1_ID = 0;
private static final boolean[] uniqueness = null;
private static final int[][] indexColumnPositions =
{
{SYSKEYS_CONSTRAINTID}
};
private static final String[] uuids =
{
"80000039-00d0-fd77-3ed8-000a0a0b1900" // catalog UUID
,"8000003c-00d0-fd77-3ed8-000a0a0b1900" // heap UUID
,"8000003b-00d0-fd77-3ed8-000a0a0b1900" // SYSKEYS_INDEX1
};
/////////////////////////////////////////////////////////////////////////////
//
// CONSTRUCTORS
//
/////////////////////////////////////////////////////////////////////////////
SYSKEYSRowFactory(UUIDFactory uuidf, ExecutionFactory ef, DataValueFactory dvf)
{
super(uuidf,ef,dvf);
initInfo(SYSKEYS_COLUMN_COUNT, TABLENAME_STRING, indexColumnPositions, uniqueness, uuids );
}
/////////////////////////////////////////////////////////////////////////////
//
// METHODS
//
/////////////////////////////////////////////////////////////////////////////
/**
* Make a SYSKEYS row
*
* @return Row suitable for inserting into SYSKEYS.
*
* @exception StandardException thrown on failure
*/
public ExecRow makeRow(TupleDescriptor td, TupleDescriptor parent)
throws StandardException
{
DataValueDescriptor col;
ExecRow row;
UUID oid;
String constraintID = null;
String conglomerateID = null;
if (td != null)
{
KeyConstraintDescriptor constraint = (KeyConstraintDescriptor)td;
/*
** We only allocate a new UUID if the descriptor doesn't already have one.
** For descriptors replicated from a Source system, we already have an UUID.
*/
oid = constraint.getUUID();
constraintID = oid.toString();
conglomerateID = constraint.getIndexUUIDString();
}
/* Insert info into syskeys */
/* RESOLVE - It would be nice to require less knowledge about syskeys
* and have this be more table driven.
*/
/* Build the row to insert */
row = getExecutionFactory().getValueRow(SYSKEYS_COLUMN_COUNT);
/* 1st column is CONSTRAINTID (UUID - char(36)) */
row.setColumn(SYSKEYS_CONSTRAINTID, new SQLChar(constraintID));
/* 2nd column is CONGLOMERATEID (UUID - char(36)) */
row.setColumn(SYSKEYS_CONGLOMERATEID, new SQLChar(conglomerateID));
return row;
}
///////////////////////////////////////////////////////////////////////////
//
// ABSTRACT METHODS TO BE IMPLEMENTED BY CHILDREN OF CatalogRowFactory
//
///////////////////////////////////////////////////////////////////////////
/**
* Make a SubConstraintDescriptor out of a SYSKEYS row
*
* @param row a SYSKEYS row
* @param parentTupleDescriptor Null for this kind of descriptor.
* @param dd dataDictionary
*
* @exception StandardException thrown on failure
*/
public TupleDescriptor buildDescriptor(
ExecRow row,
TupleDescriptor parentTupleDescriptor,
DataDictionary dd )
throws StandardException
{
SubKeyConstraintDescriptor keyDesc = null;
if (SanityManager.DEBUG)
{
SanityManager.ASSERT(
row.nColumns() == SYSKEYS_COLUMN_COUNT,
"Wrong number of columns for a SYSKEYS row");
}
DataValueDescriptor col;
DataDescriptorGenerator ddg;
UUID constraintUUID;
UUID conglomerateUUID;
String constraintUUIDString;
String conglomerateUUIDString;
ddg = dd.getDataDescriptorGenerator();
/* 1st column is CONSTRAINTID (UUID - char(36)) */
col = row.getColumn(SYSKEYS_CONSTRAINTID);
constraintUUIDString = col.getString();
constraintUUID = getUUIDFactory().recreateUUID(constraintUUIDString);
/* 2nd column is CONGLOMERATEID (UUID - char(36)) */
col = row.getColumn(SYSKEYS_CONGLOMERATEID);
conglomerateUUIDString = col.getString();
conglomerateUUID = getUUIDFactory().recreateUUID(conglomerateUUIDString);
/* now build and return the descriptor */
keyDesc = new SubKeyConstraintDescriptor(
constraintUUID,
conglomerateUUID);
return keyDesc;
}
/**
* Builds a list of columns suitable for creating this Catalog.
*
*
* @return array of SystemColumn suitable for making this catalog.
*/
public SystemColumn[] buildColumnList()
throws StandardException
{
return new SystemColumn[] {
SystemColumnImpl.getUUIDColumn("CONSTRAINTID", false),
SystemColumnImpl.getUUIDColumn("CONGLOMERATEID", false),
};
}
}