Package org.alfresco.repo.domain.schema.script

Class DeleteNotExistsExecutor

java.lang.Object

org.alfresco.repo.domain.schema.script.DeleteNotExistsExecutor

All Implemented Interfaces:

StatementExecutor

Direct Known Subclasses:

MySQLDeleteNotExistsExecutor

public class DeleteNotExistsExecutor
extends Object
implements StatementExecutor

The --DELETE_NOT_EXISTS primaryTable.columnName,secondaryTable1.columnName1,...,secondaryTableN.columnNameN batch.size.property statement is used to delete all the items that don't have any corresponding key in any of the secondary tables (e.g. secondaryTable1.columnName1,...,secondaryTableN.columnNameN).

The processing of the tables and the actual deletes are done in batches to support a high volume of data. It can be influenced using:
system.delete_not_exists.batchsize and/or system.delete_not_exists.delete_batchsize

The statement can be executed in read only mode using: system.delete_not_exists.read_only.

In case of high volume of data we can limit the processing time using: system.delete_not_exists.timeout_seconds.

Author:

Cristian Turlica

Field Summary

Fields

Modifier and Type	Field	Description
protected int	batchSize
protected Connection	connection
protected int	deleteBatchSize
protected long	deletedCount
static String	PROPERTY_BATCH_SIZE
static String	PROPERTY_DELETE_BATCH_SIZE
static String	PROPERTY_READ_ONLY
static String	PROPERTY_TIMEOUT_SECONDS
protected boolean	readOnly
protected Date	startTime

Constructor Summary

Constructors

Constructor	Description
DeleteNotExistsExecutor(Connection connection, String sql, int line, File scriptFile, Properties globalProperties)

Method Summary

Modifier and Type	Method	Description
void	checkProperties()
protected void	closeQuietly(ResultSet resultSet)
protected void	closeQuietly(ResultSet[] resultSets)
protected void	closeQuietly(Statement statement)
protected void	closeQuietly(Statement[] statements)
protected String	createPreparedDeleteStatement(String tableName, String idColumnName, int deleteBatchSize, String whereClause)
protected String	createPreparedSelectStatement(String tableName, String columnName, String whereClause)
protected void	deleteFromPrimaryTable(PreparedStatement deletePrepStmt, Set<Long> deleteIds, String primaryTableName)
void	execute()
protected Long	getColumnValueById(ResultSet resultSet, String columnId)
protected Long[]	getSecondaryIds(ResultSet[] secondaryResultSets, Pair<String,String>[] tableColumn)
protected ResultSet[]	getSecondaryResultSets(PreparedStatement[] preparedStatements)
protected boolean	isLess(Long primaryId, Long[] secondaryIds)
protected boolean	isTimeoutExceeded()
protected void	process(Pair<String,String>[] tableColumn, Long[] tableUpperLimits, String[] optionalWhereClauses)
protected Long	processPrimaryTableResultSet(PreparedStatement primaryPrepStmt, PreparedStatement[] secondaryPrepStmts, PreparedStatement deletePrepStmt, Set<Long> deleteIds, String primaryTableName, String primaryColumnName, Pair<String,String>[] tableColumn)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PROPERTY_BATCH_SIZE

public static final String PROPERTY_BATCH_SIZE

See Also:

Constant Field Values

PROPERTY_DELETE_BATCH_SIZE

public static final String PROPERTY_DELETE_BATCH_SIZE

See Also:

Constant Field Values

PROPERTY_READ_ONLY

public static final String PROPERTY_READ_ONLY

See Also:

Constant Field Values

PROPERTY_TIMEOUT_SECONDS

public static final String PROPERTY_TIMEOUT_SECONDS

See Also:

Constant Field Values

connection

protected Connection connection

readOnly

protected boolean readOnly

deleteBatchSize

protected int deleteBatchSize

batchSize

protected int batchSize

deletedCount

protected long deletedCount

startTime

protected Date startTime

Constructor Detail

DeleteNotExistsExecutor

public DeleteNotExistsExecutor(Connection connection,
                               String sql,
                               int line,
                               File scriptFile,
                               Properties globalProperties)

Method Detail

checkProperties

public void checkProperties()

execute

public void execute()
             throws Exception

Specified by:

execute in interface StatementExecutor

Throws:

Exception

process

protected void process(Pair<String,String>[] tableColumn,
                       Long[] tableUpperLimits,
                       String[] optionalWhereClauses)
                throws SQLException

Throws:

SQLException

isTimeoutExceeded

protected boolean isTimeoutExceeded()

processPrimaryTableResultSet

protected Long processPrimaryTableResultSet(PreparedStatement primaryPrepStmt,
                                            PreparedStatement[] secondaryPrepStmts,
                                            PreparedStatement deletePrepStmt,
                                            Set<Long> deleteIds,
                                            String primaryTableName,
                                            String primaryColumnName,
                                            Pair<String,String>[] tableColumn)
                                     throws SQLException

Throws:

SQLException

deleteFromPrimaryTable

protected void deleteFromPrimaryTable(PreparedStatement deletePrepStmt,
                                      Set<Long> deleteIds,
                                      String primaryTableName)
                               throws SQLException

Throws:

SQLException

isLess

protected boolean isLess(Long primaryId,
                         Long[] secondaryIds)

createPreparedSelectStatement

protected String createPreparedSelectStatement(String tableName,
                                               String columnName,
                                               String whereClause)

createPreparedDeleteStatement

protected String createPreparedDeleteStatement(String tableName,
                                               String idColumnName,
                                               int deleteBatchSize,
                                               String whereClause)

getColumnValueById

protected Long getColumnValueById(ResultSet resultSet,
                                  String columnId)
                           throws SQLException

Throws:

SQLException

getSecondaryResultSets

protected ResultSet[] getSecondaryResultSets(PreparedStatement[] preparedStatements)
                                      throws SQLException

Throws:

SQLException

getSecondaryIds

protected Long[] getSecondaryIds(ResultSet[] secondaryResultSets,
                                 Pair<String,String>[] tableColumn)
                          throws SQLException

Throws:

SQLException

closeQuietly

protected void closeQuietly(Statement statement)

closeQuietly

protected void closeQuietly(Statement[] statements)

closeQuietly

protected void closeQuietly(ResultSet resultSet)

closeQuietly

protected void closeQuietly(ResultSet[] resultSets)