Package org.pentaho.di.core.database

Class PostgreSQLDatabaseMeta

java.lang.Object

org.pentaho.di.core.database.BaseDatabaseMeta

org.pentaho.di.core.database.PostgreSQLDatabaseMeta

All Implemented Interfaces:

Cloneable, DatabaseInterface, DatabaseInterfaceExtended

Direct Known Subclasses:

GreenplumDatabaseMeta, RedshiftDatabaseMeta

public class PostgreSQLDatabaseMeta
extends BaseDatabaseMeta
implements DatabaseInterface

Contains PostgreSQL specific information through static final members

Since:

11-mrt-2005

Author:

Matt

Field Summary

Fields inherited from class org.pentaho.di.core.database.BaseDatabaseMeta

ATTRIBUTE_CLUSTER_DBNAME_PREFIX, ATTRIBUTE_CLUSTER_HOSTNAME_PREFIX, ATTRIBUTE_CLUSTER_PASSWORD_PREFIX, ATTRIBUTE_CLUSTER_PORT_PREFIX, ATTRIBUTE_CLUSTER_USERNAME_PREFIX, ATTRIBUTE_FORCE_IDENTIFIERS_TO_LOWERCASE, ATTRIBUTE_FORCE_IDENTIFIERS_TO_UPPERCASE, ATTRIBUTE_INITIAL_POOL_SIZE, ATTRIBUTE_IS_CLUSTERED, ATTRIBUTE_MAXIMUM_POOL_SIZE, ATTRIBUTE_MSSQL_DOUBLE_DECIMAL_SEPARATOR, ATTRIBUTE_POOLING_PARAMETER_PREFIX, ATTRIBUTE_PORT_NUMBER, ATTRIBUTE_PREFERRED_SCHEMA_NAME, ATTRIBUTE_PREFIX_EXTRA_OPTION, ATTRIBUTE_PRESERVE_RESERVED_WORD_CASE, ATTRIBUTE_QUOTE_ALL_FIELDS, ATTRIBUTE_SQL_CONNECT, ATTRIBUTE_SUPPORTS_BOOLEAN_DATA_TYPE, ATTRIBUTE_SUPPORTS_TIMESTAMP_DATA_TYPE, ATTRIBUTE_USE_POOLING, ATTRIBUTE_USE_RESULT_STREAMING, AUTOINCREMENT_SQL_FOR_BATCH_ID, NAMED_CLUSTER_ID, poolingParameters, releaseSavepoint, SELECT_COUNT_STATEMENT, SEQUENCE_FOR_BATCH_ID

Constructor Summary

Constructors

Constructor	Description
PostgreSQLDatabaseMeta()

Method Summary

Modifier and Type	Method	Description
int[]	getAccessTypeList()	Get the list of possible access types for a database.
String	getAddColumnStatement(String tablename, ValueMetaInterface v, String tk, boolean useAutoinc, String pk, boolean semicolon)	Generates the SQL statement to add a column to the specified table
int	getDefaultDatabasePort()
String	getDriverClass()	Obtain the name of the JDBC driver class that we need to use!
String	getDropColumnStatement(String tablename, ValueMetaInterface v, String tk, boolean useAutoinc, String pk, boolean semicolon)	Generates the SQL statement to drop a column from the specified table
String	getExtraOptionIndicator()
String	getExtraOptionSeparator()
String	getExtraOptionsHelpText()
String	getFieldDefinition(ValueMetaInterface v, String tk, String pk, boolean useAutoinc, boolean addFieldName, boolean addCr)	Describe a Value as a field in the database.
String	getLimitClause(int nrRows)
int	getMaxTextFieldLength()	Get the maximum length of a text field for this database connection.
int	getMaxVARCHARLength()	Get the maximum length of a text field (VARCHAR) for this database connection.
String	getModifyColumnStatement(String tablename, ValueMetaInterface v, String tk, boolean useAutoinc, String pk, boolean semicolon)	Generates the SQL statement to modify a column in the specified table
String[]	getReservedWords()
String	getSQLColumnExists(String columnname, String tablename)
String	getSQLCurrentSequenceValue(String sequenceName)	Get the SQL to get the next value of a sequence.
String	getSQLListOfProcedures()
String	getSQLListOfSequences()
String	getSQLLockTables(String[] tableNames)
String	getSQLNextSequenceValue(String sequenceName)	Get the SQL to get the next value of a sequence.
String	getSQLQueryColumnFields(String columnname, String tableName)
String	getSQLQueryFields(String tableName)	Returns the minimal SQL to launch in order to determine the layout of the resultset for a given database table
String	getSQLSequenceExists(String sequenceName)	Check if a sequence exists.
String	getSQLTableExists(String tablename)
String	getSQLUnlockTables(String[] tableName)
String	getURL(String hostname, String port, String databaseName)
String[]	getUsedLibraries()
boolean	isDefaultingToUppercase()
boolean	isFetchSizeSupported()	Checks whether or not the command setFetchSize() is supported by the JDBC driver...
boolean	needsToLockAllTables()
String	quoteSQLString(String string)	PG needs the extra E in front of the string before it allows you to quote it.
boolean	requiresCastToVariousForIsNull()
boolean	supportsAutoInc()	Support for the serial field is only fake in PostgreSQL.
boolean	supportsBitmapIndex()
boolean	supportsErrorHandlingOnBatchUpdates()
boolean	supportsGetBlob()
boolean	supportsRepository()
boolean	supportsSequenceNoMaxValueOption()
boolean	supportsSequences()
boolean	supportsSynonyms()
boolean	useSafePoints()

Methods inherited from class org.pentaho.di.core.database.BaseDatabaseMeta

addAttribute, addDefaultOptions, addExtraOption, canTest, checkIndexExists, clone, customizeValueFromSQLType, fullExceptionLog, generateColumnAlias, getAccessType, getAttribute, getAttributes, getBackwardsCompatibleSchemaTableCombination, getBackwardsCompatibleTable, getConnectionPoolingProperties, getConnectSQL, getCreateTableStatement, getDatabaseFactoryName, getDatabaseName, getDatabasePortNumberString, getDataTablespace, getDataTablespaceDDL, getDefaultOptions, getDisplayName, getDropTableIfExistsStatement, getEndQuote, getExtraOptions, getExtraOptionValueSeparator, getFieldnameProtector, getFunctionAverage, getFunctionCount, getFunctionMaximum, getFunctionMinimum, getFunctionSum, getHostname, getIndexTablespace, getIndexTablespaceDDL, getInitialPoolSize, getInitialPoolSizeString, getMaxColumnsInIndex, getMaximumPoolSize, getMaximumPoolSizeString, getName, getNamedCluster, getNextBatchId, getNextBatchIdUsingAutoIncSQL, getNextBatchIdUsingLockTables, getNextBatchIdUsingSequence, getNotFoundTK, getObjectId, getPartitioningInformation, getPassword, getPluginId, getPluginName, getPreferredSchemaName, getSafeFieldname, getSchemaTableCombination, getSelectCountStatement, getSequenceNoMaxValueOption, getServername, getSQLInsertAutoIncUnknownDimensionRow, getSQLListOfSchemas, getSqlScriptStatements, getSQLValue, getStartQuote, getSynonymTypes, getTablespaceDDL, getTableTypes, getTruncateTableStatement, getUsername, getValueFromResultSet, getViewTypes, getXulOverlayFile, isChanged, isDisplaySizeTwiceThePrecision, isExplorable, isForcingIdentifiersToLowerCase, isForcingIdentifiersToUpperCase, isMySQLVariant, isPartitioned, isQuoteAllFields, isRequiringTransactionsOnQueries, isStreamingResults, isSystemTable, isUsingConnectionPool, isUsingDoubleDecimalAsSchemaTableSeparator, needsPlaceHolder, onlySpaces, parseStatements, preserveReservedCase, quoteReservedWords, releaseSavepoint, requiresCreateTablePrimaryKeyAppend, requiresName, setAccessType, setAttributes, setChanged, setConnectionPoolingProperties, setConnectSQL, setDatabaseName, setDatabasePortNumberString, setDataTablespace, setDisplayName, setForcingIdentifiersToLowerCase, setForcingIdentifiersToUpperCase, setHostname, setIndexTablespace, setInitialPoolSize, setInitialPoolSizeString, setMaximumPoolSize, setMaximumPoolSizeString, setName, setNamedCluster, setObjectId, setPartitioned, setPartitioningInformation, setPassword, setPluginId, setPluginName, setPreferredSchemaName, setPreserveReservedCase, setQuoteAllFields, setServername, setStreamingResults, setSupportsBooleanDataType, setSupportsTimestampDataType, setUsername, setUsingConnectionPool, setUsingDoubleDecimalAsSchemaTableSeparator, supportsAutoGeneratedKeys, supportsBatchUpdates, supportsBooleanDataType, supportsCatalogs, supportsEmptyTransactions, supportsErrorHandling, supportsFloatRoundingOnUpdate, supportsNewLinesInSQL, supportsOptionsInURL, supportsPreparedStatementMetadataRetrieval, supportsResultSetMetadataRetrievalOnly, supportsSchemas, supportsSetCharacterStream, supportsSetLong, supportsSetMaxRows, supportsTimestampDataType, supportsTimeStampToDateConversion, supportsTransactions, supportsViews, useSchemaNameForTableList

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.pentaho.di.core.database.DatabaseInterface

addAttribute, addDefaultOptions, addExtraOption, checkIndexExists, clone, createSqlScriptParser, customizeValueFromSQLType, generateColumnAlias, getAccessType, getAttribute, getAttributes, getConnectionPoolingProperties, getConnectSQL, getCreateTableStatement, getDatabaseFactoryName, getDatabaseName, getDatabasePortNumberString, getDataTablespace, getDataTablespaceDDL, getDefaultOptions, getDisplayName, getEndQuote, getExtraOptions, getExtraOptionValueSeparator, getFunctionAverage, getFunctionCount, getFunctionMaximum, getFunctionMinimum, getFunctionSum, getHostname, getIndexTablespace, getIndexTablespaceDDL, getInitialPoolSize, getInitialPoolSizeString, getLegacyColumnName, getMaxColumnsInIndex, getMaximumPoolSize, getMaximumPoolSizeString, getName, getNamedCluster, getNamedClusterList, getNextBatchId, getNotFoundTK, getObjectId, getPartitioningInformation, getPassword, getPluginId, getPluginName, getPreferredSchemaName, getSafeFieldname, getSchemas, getSchemaTableCombination, getSelectCountStatement, getSequenceNoMaxValueOption, getServername, getSQLInsertAutoIncUnknownDimensionRow, getSQLListOfSchemas, getSQLListOfSchemas, getSqlScriptStatements, getSQLValue, getStartQuote, getSynonymTypes, getTables, getTableTypes, getTruncateTableStatement, getUnsupportedTableOutputMessage, getUsername, getValueFromResultSet, getViewTypes, getXulOverlayFile, isChanged, isDisplaySizeTwiceThePrecision, isExplorable, isForcingIdentifiersToLowerCase, isForcingIdentifiersToUpperCase, isMySQLVariant, isPartitioned, isQuoteAllFields, isRequiringTransactionsOnQueries, isStreamingResults, isSystemTable, isUsingConnectionPool, isUsingDoubleDecimalAsSchemaTableSeparator, needsPlaceHolder, parseStatements, preserveReservedCase, putOptionalOptions, quoteReservedWords, releaseSavepoint, requiresCreateTablePrimaryKeyAppend, setAccessType, setAttributes, setChanged, setConnectionPoolingProperties, setConnectSQL, setDatabaseName, setDatabasePortNumberString, setDataTablespace, setDisplayName, setForcingIdentifiersToLowerCase, setForcingIdentifiersToUpperCase, setHostname, setIndexTablespace, setInitialPoolSize, setInitialPoolSizeString, setMaximumPoolSize, setMaximumPoolSizeString, setName, setNamedCluster, setObjectId, setPartitioned, setPartitioningInformation, setPassword, setPluginId, setPluginName, setPreferredSchemaName, setPreserveReservedCase, setQuoteAllFields, setServername, setStreamingResults, setSupportsBooleanDataType, setSupportsTimestampDataType, setUsername, setUsingConnectionPool, setUsingDoubleDecimalAsSchemaTableSeparator, supportsAutoGeneratedKeys, supportsBatchUpdates, supportsBooleanDataType, supportsCatalogs, supportsEmptyTransactions, supportsErrorHandling, supportsFloatRoundingOnUpdate, supportsIndexes, supportsNewLinesInSQL, supportsOptionsInURL, supportsPreparedStatementMetadataRetrieval, supportsResultSetMetadataRetrievalOnly, supportsSchemas, supportsSetCharacterStream, supportsSetLong, supportsSetMaxRows, supportsStandardTableOutput, supportsTimestampDataType, supportsTimeStampToDateConversion, supportsTransactions, supportsViews, useSchemaNameForTableList

Constructor Detail

PostgreSQLDatabaseMeta

public PostgreSQLDatabaseMeta()

Method Detail

getExtraOptionSeparator

public String getExtraOptionSeparator()

Specified by:

getExtraOptionSeparator in interface DatabaseInterface

Overrides:

getExtraOptionSeparator in class BaseDatabaseMeta

Returns:

The extra option separator in database URL for this platform

getExtraOptionIndicator

public String getExtraOptionIndicator()

Specified by:

getExtraOptionIndicator in interface DatabaseInterface

Overrides:

getExtraOptionIndicator in class BaseDatabaseMeta

Returns:

This indicator separates the normal URL from the options

getAccessTypeList

public int[] getAccessTypeList()

Description copied from interface: DatabaseInterface

Get the list of possible access types for a database.

Specified by:

getAccessTypeList in interface DatabaseInterface

Specified by:

getAccessTypeList in class BaseDatabaseMeta

Returns:

the list of possible access types for a database.

getDefaultDatabasePort

public int getDefaultDatabasePort()

Specified by:

getDefaultDatabasePort in interface DatabaseInterface

Overrides:

getDefaultDatabasePort in class BaseDatabaseMeta

Returns:

the default database port number

getDriverClass

public String getDriverClass()

Description copied from interface: DatabaseInterface

Obtain the name of the JDBC driver class that we need to use!

Specified by:

getDriverClass in interface DatabaseInterface

Returns:

the name of the JDBC driver class for the specific database

getURL

public String getURL(String hostname,
                     String port,
                     String databaseName)

Specified by:

getURL in interface DatabaseInterface

Parameters:

hostname - the hostname

port - the port as a string

databaseName - the database name

Returns:

the URL to use for connecting to the database.

isFetchSizeSupported

public boolean isFetchSizeSupported()

Checks whether or not the command setFetchSize() is supported by the JDBC driver...

Specified by:

isFetchSizeSupported in interface DatabaseInterface

Overrides:

isFetchSizeSupported in class BaseDatabaseMeta

Returns:

true is setFetchSize() is supported!

supportsBitmapIndex

public boolean supportsBitmapIndex()

Specified by:

supportsBitmapIndex in interface DatabaseInterface

Overrides:

supportsBitmapIndex in class BaseDatabaseMeta

Returns:

true if the database supports bitmap indexes

supportsSynonyms

public boolean supportsSynonyms()

Specified by:

supportsSynonyms in interface DatabaseInterface

Overrides:

supportsSynonyms in class BaseDatabaseMeta

Returns:

true if the database supports synonyms

supportsSequences

public boolean supportsSequences()

Specified by:

supportsSequences in interface DatabaseInterface

Overrides:

supportsSequences in class BaseDatabaseMeta

Returns:

true if the database supports sequences

supportsSequenceNoMaxValueOption

public boolean supportsSequenceNoMaxValueOption()

Specified by:

supportsSequenceNoMaxValueOption in interface DatabaseInterface

Overrides:

supportsSequenceNoMaxValueOption in class BaseDatabaseMeta

Returns:

true if the database supports the NOMAXVALUE sequence option. The default is false, AS/400 and DB2 support this.

supportsAutoInc

public boolean supportsAutoInc()

Support for the serial field is only fake in PostgreSQL. You can't get back the value after the inserts (getGeneratedKeys) through JDBC calls. Therefor it's wiser to use the built-in sequence support directly, not the auto increment features.

Specified by:

supportsAutoInc in interface DatabaseInterface

Overrides:

supportsAutoInc in class BaseDatabaseMeta

Returns:

Whether or not the database can use auto increment type of fields (pk)

getLimitClause

public String getLimitClause(int nrRows)

Specified by:

getLimitClause in interface DatabaseInterface

Overrides:

getLimitClause in class BaseDatabaseMeta

Parameters:

nrRows - The number of rows to which we want to limit the result of the query.

Returns:

the clause after a select statement to limit the number of rows

getSQLQueryFields

public String getSQLQueryFields(String tableName)

Description copied from class: BaseDatabaseMeta

Returns the minimal SQL to launch in order to determine the layout of the resultset for a given database table

Specified by:

getSQLQueryFields in interface DatabaseInterface

Overrides:

getSQLQueryFields in class BaseDatabaseMeta

Parameters:

tableName - The name of the table to determine the layout for

Returns:

The SQL to launch.

getSQLTableExists

public String getSQLTableExists(String tablename)

Specified by:

getSQLTableExists in interface DatabaseInterface

Overrides:

getSQLTableExists in class BaseDatabaseMeta

Parameters:

tablename - The table to verify the existance for

Returns:

The SQL to execute to verify if the given table exists. If an Exception is thrown for this SQL, we don't have the table.

getSQLColumnExists

public String getSQLColumnExists(String columnname,
                                 String tablename)

Specified by:

getSQLColumnExists in interface DatabaseInterface

Overrides:

getSQLColumnExists in class BaseDatabaseMeta

Parameters:

columnname - The column to verify the existance for

tablename - The table to verify the existance for

Returns:

The SQL to execute to verify if the given table exists. If an Exception is thrown for this SQL, we don't have the column.

getSQLQueryColumnFields

public String getSQLQueryColumnFields(String columnname,
                                      String tableName)

needsToLockAllTables

public boolean needsToLockAllTables()

Specified by:

needsToLockAllTables in interface DatabaseInterface

Overrides:

needsToLockAllTables in class BaseDatabaseMeta

Returns:

true if the database needs all repository tables to be locked, not just one ref table (R_REPOSITORY_LOG)

getSQLListOfSequences

public String getSQLListOfSequences()

Specified by:

getSQLListOfSequences in interface DatabaseInterface

Overrides:

getSQLListOfSequences in class BaseDatabaseMeta

Returns:

The SQL on this database to get a list of sequences.

getSQLNextSequenceValue

public String getSQLNextSequenceValue(String sequenceName)

Get the SQL to get the next value of a sequence. (PostgreSQL version)

Specified by:

getSQLNextSequenceValue in interface DatabaseInterface

Overrides:

getSQLNextSequenceValue in class BaseDatabaseMeta

Parameters:

sequenceName - The sequence name

Returns:

the SQL to get the next value of a sequence.

getSQLCurrentSequenceValue

public String getSQLCurrentSequenceValue(String sequenceName)

Get the SQL to get the next value of a sequence. (PostgreSQL version)

Specified by:

getSQLCurrentSequenceValue in interface DatabaseInterface

Overrides:

getSQLCurrentSequenceValue in class BaseDatabaseMeta

Parameters:

sequenceName - The sequence name

Returns:

the SQL to get the next value of a sequence.

getSQLSequenceExists

public String getSQLSequenceExists(String sequenceName)

Check if a sequence exists.

Specified by:

getSQLSequenceExists in interface DatabaseInterface

Overrides:

getSQLSequenceExists in class BaseDatabaseMeta

Parameters:

sequenceName - The sequence to check

Returns:

The SQL to get the name of the sequence back from the databases data dictionary

getAddColumnStatement

public String getAddColumnStatement(String tablename,
                                    ValueMetaInterface v,
                                    String tk,
                                    boolean useAutoinc,
                                    String pk,
                                    boolean semicolon)

Generates the SQL statement to add a column to the specified table

Specified by:

getAddColumnStatement in interface DatabaseInterface

Parameters:

tablename - The table to add

v - The column defined as a value

tk - the name of the technical key field

useAutoinc - whether or not this field uses auto increment

pk - the name of the primary key field

semicolon - whether or not to add a semi-colon behind the statement.

Returns:

the SQL statement to add a column to the specified table

getDropColumnStatement

public String getDropColumnStatement(String tablename,
                                     ValueMetaInterface v,
                                     String tk,
                                     boolean useAutoinc,
                                     String pk,
                                     boolean semicolon)

Generates the SQL statement to drop a column from the specified table

Specified by:

getDropColumnStatement in interface DatabaseInterface

Overrides:

getDropColumnStatement in class BaseDatabaseMeta

Parameters:

tablename - The table to add

v - The column defined as a value

tk - the name of the technical key field

useAutoinc - whether or not this field uses auto increment

pk - the name of the primary key field

semicolon - whether or not to add a semi-colon behind the statement.

Returns:

the SQL statement to drop a column from the specified table

getModifyColumnStatement

public String getModifyColumnStatement(String tablename,
                                       ValueMetaInterface v,
                                       String tk,
                                       boolean useAutoinc,
                                       String pk,
                                       boolean semicolon)

Generates the SQL statement to modify a column in the specified table

Specified by:

getModifyColumnStatement in interface DatabaseInterface

Parameters:

tablename - The table to add

v - The column defined as a value

tk - the name of the technical key field

useAutoinc - whether or not this field uses auto increment

pk - the name of the primary key field

semicolon - whether or not to add a semi-colon behind the statement.

Returns:

the SQL statement to modify a column in the specified table

getFieldDefinition

public String getFieldDefinition(ValueMetaInterface v,
                                 String tk,
                                 String pk,
                                 boolean useAutoinc,
                                 boolean addFieldName,
                                 boolean addCr)

Description copied from interface: DatabaseInterface

Describe a Value as a field in the database.

Specified by:

getFieldDefinition in interface DatabaseInterface

Parameters:

v - The value to describe

tk - The field that's going to be the technical key

pk - The field that's going to be the primary key

useAutoinc - Use autoincrement or not

addFieldName - Add the fieldname to the definition or not

addCr - Add a cariage return at the end of the definition or not.

Returns:

a value described as a field in this database.

getSQLListOfProcedures

public String getSQLListOfProcedures()

Specified by:

getSQLListOfProcedures in interface DatabaseInterface

Overrides:

getSQLListOfProcedures in class BaseDatabaseMeta

Returns:

The SQL on this database to get a list of stored procedures.

getReservedWords

public String[] getReservedWords()

Specified by:

getReservedWords in interface DatabaseInterface

Overrides:

getReservedWords in class BaseDatabaseMeta

Returns:

an array of reserved words for the database type...

supportsRepository

public boolean supportsRepository()

Specified by:

supportsRepository in interface DatabaseInterface

Overrides:

supportsRepository in class BaseDatabaseMeta

Returns:

true if Kettle can create a repository on this type of database.

getSQLLockTables

public String getSQLLockTables(String[] tableNames)

Specified by:

getSQLLockTables in interface DatabaseInterface

Overrides:

getSQLLockTables in class BaseDatabaseMeta

Parameters:

tableNames - The names of the tables to lock

Returns:

The SQL commands to lock database tables for write purposes.

getSQLUnlockTables

public String getSQLUnlockTables(String[] tableName)

Specified by:

getSQLUnlockTables in interface DatabaseInterface

Overrides:

getSQLUnlockTables in class BaseDatabaseMeta

Parameters:

tableName - The name of the table to unlock

Returns:

The SQL command to unlock a database table.

isDefaultingToUppercase

public boolean isDefaultingToUppercase()

Specified by:

isDefaultingToUppercase in interface DatabaseInterface

Overrides:

isDefaultingToUppercase in class BaseDatabaseMeta

Returns:

true if the database defaults to naming tables and fields in uppercase. True for most databases except for stubborn stuff like PostgreSQL ;-)

getExtraOptionsHelpText

public String getExtraOptionsHelpText()

Specified by:

getExtraOptionsHelpText in interface DatabaseInterface

Overrides:

getExtraOptionsHelpText in class BaseDatabaseMeta

Returns:

extra help text on the supported options on the selected database platform.

getUsedLibraries

public String[] getUsedLibraries()

Specified by:

getUsedLibraries in interface DatabaseInterface

Returns:

the required libraries (in lib) for this database connection.

supportsErrorHandlingOnBatchUpdates

public boolean supportsErrorHandlingOnBatchUpdates()

Specified by:

supportsErrorHandlingOnBatchUpdates in interface DatabaseInterface

Overrides:

supportsErrorHandlingOnBatchUpdates in class BaseDatabaseMeta

Returns:

true if the database supports error handling (recovery of failure) while doing batch updates.

quoteSQLString

public String quoteSQLString(String string)

PG needs the extra E in front of the string before it allows you to quote it. Imagine that.

Specified by:

quoteSQLString in interface DatabaseInterface

Overrides:

quoteSQLString in class BaseDatabaseMeta

Parameters:

string -

Returns:

A string that is properly quoted for use in a SQL statement (insert, update, delete, etc)

requiresCastToVariousForIsNull

public boolean requiresCastToVariousForIsNull()

Specified by:

requiresCastToVariousForIsNull in interface DatabaseInterface

Overrides:

requiresCastToVariousForIsNull in class BaseDatabaseMeta

Returns:

true if the database requires you to cast a parameter to varchar before comparing to null. Only required for DB2 and Vertica

supportsGetBlob

public boolean supportsGetBlob()

Specified by:

supportsGetBlob in interface DatabaseInterface

Overrides:

supportsGetBlob in class BaseDatabaseMeta

Returns:

true if the database JDBC driver supports getBlob on the resultset. If not we must use getBytes() to get the data.

useSafePoints

public boolean useSafePoints()

Specified by:

useSafePoints in interface DatabaseInterface

Overrides:

useSafePoints in class BaseDatabaseMeta

Returns:

true if the database supports the use of safe-points and if it is appropriate to ever use it (default to false)

getMaxVARCHARLength

public int getMaxVARCHARLength()

Description copied from class: BaseDatabaseMeta

Get the maximum length of a text field (VARCHAR) for this database connection. If this size is exceeded use a CLOB.

Specified by:

getMaxVARCHARLength in interface DatabaseInterface

Overrides:

getMaxVARCHARLength in class BaseDatabaseMeta

Returns:

The maximum VARCHAR field length for this database type. (mostly identical to getMaxTextFieldLength() - CLOB_LENGTH)

getMaxTextFieldLength

public int getMaxTextFieldLength()

Description copied from class: BaseDatabaseMeta

Get the maximum length of a text field for this database connection. This includes optional CLOB, Memo and Text fields. (the maximum!)

Specified by:

getMaxTextFieldLength in interface DatabaseInterface

Overrides:

getMaxTextFieldLength in class BaseDatabaseMeta

Returns:

The maximum text field length for this database type. (mostly CLOB_LENGTH)