org.jpox.store.rdbms.adapter
Class HSQLAdapter

java.lang.Object
  org.jpox.store.mapped.AbstractDatastoreAdapter
      org.jpox.store.rdbms.adapter.DatabaseAdapter
          org.jpox.store.rdbms.adapter.HSQLAdapter

All Implemented Interfaces:

org.jpox.store.mapped.DatastoreAdapter, org.jpox.store.mapped.expression.ExpressionConversionAdapter, org.jpox.store.mapped.expression.ExpressionLogicSetAdapter, org.jpox.store.mapped.expression.ExpressionMethodAdapter, org.jpox.store.mapped.expression.ExpressionOperatorAdapter, org.jpox.store.mapped.expression.ExpressionPatternAdapter, org.jpox.store.mapped.expression.ExpressionSupportedFeaturesAdapter, RDBMSAdapter

public class HSQLAdapter
extends DatabaseAdapter

Provides methods for adapting SQL language elements to the Hypersonic SQL Server database.

Version:

$Revision: 1.50 $

Nested Class Summary

Nested classes/interfaces inherited from class org.jpox.store.rdbms.adapter.DatabaseAdapter

DatabaseAdapter.JDBCTypeInfo

Field Summary

Fields inherited from class org.jpox.store.rdbms.adapter.DatabaseAdapter

catalogSeparator, driverMajorVersion, driverMinorVersion, driverName, driverVersion, LOCALISER, maxColumnNameLength, maxConstraintNameLength, maxIndexNameLength, maxTableNameLength, storesLowerCaseIdentifiers, storesLowerCaseQuotedIdentifiers, storesMixedCaseIdentifiers, storesMixedCaseQuotedIdentifiers, storesMixedCaseQuotedSensitiveIdentifiers, storesMixedCaseSensitiveIdentifiers, storesUpperCaseIdentifiers, storesUpperCaseQuotedIdentifiers, supportsCatalogsInTableDefinitions, supportsSchemasInTableDefinitions, supportsStatementBatching, typesByTypeNumber

Fields inherited from class org.jpox.store.mapped.AbstractDatastoreAdapter

datastoreMajorVersion, datastoreMinorVersion, datastoreProductName, datastoreProductVersion, datastoreRevisionVersion, identifierQuoteString, LOCALISER_BASE, mappingManager, reservedKeywords

Constructor Summary

HSQLAdapter(java.sql.DatabaseMetaData metadata)
Constructs a Hypersonic SQL adapter based on the given JDBC metadata.

Method Summary

java.lang.String	getAddColumnStatement(org.jpox.store.mapped.DatastoreContainerObject table, Column col) Accessor for the SQL statement to add a column to a table.
java.lang.String	getAddPrimaryKeyStatement(PrimaryKey pk, org.jpox.store.mapped.IdentifierFactory factory) HSQL 1.7.0 does not support ALTER TABLE to define a primary key
java.lang.String	getAutoIncrementKeyword() Accessor for the auto-increment keyword for generating DDLs (CREATE TABLEs...).
java.lang.String	getAutoIncrementStmt(Table table, java.lang.String columnName) Accessor for the auto-increment sql statement for this datastore.
java.lang.String	getDatastoreDateStatement() Accessor for a statement that will return the statement to use to get the datastore date.
java.lang.String	getDropTableStatement(org.jpox.store.mapped.DatastoreContainerObject table) Returns the appropriate SQL to drop the given table.
java.lang.String	getInsertStatementForNoColumns(Table table) Method to retutn the INSERT statement to use when inserting into a table that has no columns specified.
int	getMaxColumnNameLength() Accessor for the maximum column name length permitted on this datastore.
int	getMaxConstraintNameLength() Accessor for the maximum constraint name length permitted on this datastore.
int	getMaxIndexNameLength() Accessor for the maximum index name length permitted on this datastore.
int	getMaxTableNameLength() Accessor for the maximum table name length permitted on this datastore.
java.lang.String	getRangeByLimitSelectClause(long offset, long count) Method to return the SQL to append to the SELECT clause of a SELECT statement to handle restriction of ranges using the LIMUT keyword.
int	getRequiredTransactionIsolationLevel() Accessor for the "required" transaction isolation level if it has to be a certain value for this adapter.
java.lang.String	getSchemaName(java.sql.Connection conn) Accessor for the Schema Name for this datastore.
java.lang.String	getSequenceCreateStmt(java.lang.String sequence_name, java.lang.String min, java.lang.String max, java.lang.String start, java.lang.String increment, java.lang.String cache_size) Accessor for the sequence statement to create the sequence.
java.lang.String	getSequenceNextStmt(java.lang.String sequence_name) Accessor for the statement for getting the next id from the sequence for this datastore.
java.lang.String	getVendorID() Accessor for the vendor ID for this adapter.
boolean	isValidPrimaryKeyType(int datatype) Accessor for whether the specified type is allow to be part of a PK.
org.jpox.store.mapped.expression.NumericExpression	modOperator(org.jpox.store.mapped.expression.ScalarExpression operand1, org.jpox.store.mapped.expression.ScalarExpression operand2) Method to generate a modulus expression.
org.jpox.store.mapped.expression.LogicSetExpression	newTableExpression(org.jpox.store.mapped.expression.QueryExpression qs, org.jpox.store.mapped.DatastoreContainerObject table, org.jpox.store.mapped.DatastoreIdentifier rangeVar) Return a new TableExpression appropriate to MySQL.
TypeInfo	newTypeInfo(java.sql.ResultSet rs) Factory for TypeInfo objects.
boolean	supportsAnalysisMethods() Accessor for whether the SQL extensions CUBE, ROLLUP are supported.
boolean	supportsCheckConstraintsInEndCreateStatements() Whether this datastore supports the use of CHECK after the column definitions in CREATE TABLE statements (DDL).
boolean	supportsCheckInCreateStatements() Whether this datastore supports the use of CHECK in CREATE TABLE statements (DDL).
boolean	supportsDeferredConstraints() Whether we support deferred constraints in keys.
boolean	supportsForeignKeyDeleteAction(ForeignKey.FKAction action) Whether this datastore supports the specified foreign key delete action
boolean	supportsForeignKeyUpdateAction(ForeignKey.FKAction action) Whether this datastore supports the specified foreign key update action
boolean	supportsIdentityFields() Whether we support autoincrementing fields.
boolean	supportsPrimaryKeyInCreateStatements() Whether the datastore supports specification of the primary key in CREATE TABLE statements.
boolean	supportsSequences() Whether we support sequences.
boolean	supportsStatementBatching() Whether this datastore supports batching of statements.
boolean	supportsStatementGetGeneratedKeys() Whether the datastore supports Statement.getGeneratedKeys()
boolean	supportsTransactionIsolationLevel(int isolationLevel) Accessor for whether the adapter supports the transaction isolation level HSQL 1.7.0 does not support Connection.setTransactionIsolation(isolationLevel); Up to and including 1.7.1, HSQLDB supports only TRANSACTION_READ_UNCOMMITTED.
boolean	supportsUniqueConstraintsInEndCreateStatements() Whether to allow Unique statements in the section of CREATE TABLE after the column definitions.
org.jpox.store.mapped.expression.StringExpression	trimMethod(org.jpox.store.mapped.expression.StringExpression str, boolean leading, boolean trailing) Returns the appropriate SQL expression for the java query "trim" method.

Methods inherited from class org.jpox.store.rdbms.adapter.DatabaseAdapter

absMethod, acosMethod, addTypeInfo, asinMethod, atanMethod, cartersianProduct, ceilMethod, closeConnection, concatOperator, cosMethod, createIndexesBeforeForeignKeys, endsWithMethod, expMethod, floorMethod, getAddCandidateKeyStatement, getAddForeignKeyStatement, getCatalogName, getCatalogSeparator, getCharColumnsPaddedWithSpaces, getCheckConstraintForValues, getColumns, getColumns, getConnection, getContinuationString, getCreateIndexStatement, getCreateTableStatement, getCurrentDateMethod, getCurrentTimeMethod, getCurrentTimestampMethod, getDayMethod, getDriverMajorVersion, getDriverMinorVersion, getDropViewStatement, getEscapeCharacter, getEscapedPatternExpression, getEscapePatternExpression, getExistingIndexes, getHourMethod, getMaxForeignKeys, getMaxIndexes, getMinuteMethod, getMonthMethod, getNewMappingManager, getNewUUIDFunction, getNonAnsiInnerJoinWhereClause, getNonAnsiLeftOuterJoinWhereClause, getNonAnsiRightOuterJoinWhereClause, getOperatorConcat, getPatternExpressionAnyCharacter, getPatternExpressionZeroMoreCharacters, getPlaceWithOptionAfterFromClause, getPlaceWithOptionWithinJoinClauses, getRangeByLimitWhereClause, getRangeByRowNumberColumn, getSecondMethod, getSelectNewUUIDStmt, getSelectWithLockOption, getSupportsPersistOfUnassignedChar, getSurrogateForEmptyStrings, getTables, getTransactionIsolationForSchemaCreation, getTypeInfo, getUnlimitedLengthPrecisionValue, getYearMethod, includeOrderByColumnsInSelect, indexOfMethod, initialiseDatastore, isIdentityFieldDataType, isNullEqualsEmptyStrings, isSQLKeyword, isStoresLowerCaseIdentifiers, isStoresLowerCaseQuotedIdentifiers, isStoresMixedCaseIdentifiers, isStoresMixedCaseQuotedIdentifiers, isStoresUpperCaseIdentifiers, isStoresUpperCaseQuotedIdentifiers, iteratorReservedWords, iteratorTypeInfo, lengthMethod, loadDatastoreMapping, logConfiguration, logMethod, matchesMethod, newColumnInfo, newExportedKeyInfo, newForeignKeyInfo, newQueryStatement, newQueryStatement, parseKeywordList, requiresColumnDefaultsInitialising, setDefaultTypeInfoForJDBCType, sinMethod, sqrtMethod, startsWithMethod, substringMethod, substringMethod, supportsAlterTableDropConstraint, supportsAlterTableDropForeignKeyConstraint, supportsAnsiJoinSyntax, supportsAutoIncrementColumnTypeSpecification, supportsAutoIncrementKeysNullSpecification, supportsBooleanComparison, supportsCatalogsInTableDefinitions, supportsDefaultBeforeNullInColumnOptions, supportsDefaultKeywordInColumnOptions, supportsDefaultKeywordWithNotNullInColumnOptions, supportsDistinctWithSelectForUpdate, supportsEscapeExpressionInLikePredicate, supportsExistsSyntax, supportsLockWithSelectForUpdate, supportsNullsInCandidateKeys, supportsNullsKeywordInColumnOptions, supportsProjectionInTableReferenceJoins, supportsSchemasInTableDefinitions, supportsSettingBlobUsingSetString, supportsSettingClobUsingSetString, supportsUnionSyntax, tanMethod, toNumericExpression, toString, toStringExpression, toStringExpression, translateMethod, useUnionAll

Methods inherited from class org.jpox.store.mapped.AbstractDatastoreAdapter

getAdapterTime, getDatastoreMajorVersion, getDatastoreMinorVersion, getIdentifierQuoteString, getMapping, getMapping, getMapping, getMapping, getMapping, getMappingManager, getMiliseconds, getTime, isBitReallyBoolean, isReservedKeyword, supportsQueryFetchSize

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jpox.store.rdbms.adapter.RDBMSAdapter

getIdentifierQuoteString

Methods inherited from interface org.jpox.store.mapped.DatastoreAdapter

getAdapterTime, getDatastoreMajorVersion, getDatastoreMinorVersion, getMapping, getMapping, getMapping, getMapping, getMappingManager, isBitReallyBoolean, isReservedKeyword, supportsQueryFetchSize

Constructor Detail

HSQLAdapter

public HSQLAdapter(java.sql.DatabaseMetaData metadata)

Constructs a Hypersonic SQL adapter based on the given JDBC metadata.

Parameters:

metadata - the database metadata.

Method Detail

getVendorID

public java.lang.String getVendorID()

Accessor for the vendor ID for this adapter.

Specified by:

getVendorID in interface org.jpox.store.mapped.DatastoreAdapter

Overrides:

getVendorID in class org.jpox.store.mapped.AbstractDatastoreAdapter

Returns:

The vendor ID

getMaxTableNameLength

public int getMaxTableNameLength()

Accessor for the maximum table name length permitted on this datastore.

Specified by:

getMaxTableNameLength in interface RDBMSAdapter

Overrides:

getMaxTableNameLength in class DatabaseAdapter

Returns:

Max table name length

getMaxConstraintNameLength

public int getMaxConstraintNameLength()

Accessor for the maximum constraint name length permitted on this datastore.

Specified by:

getMaxConstraintNameLength in interface RDBMSAdapter

Overrides:

getMaxConstraintNameLength in class DatabaseAdapter

Returns:

Max constraint name length

getMaxIndexNameLength

public int getMaxIndexNameLength()

Accessor for the maximum index name length permitted on this datastore.

Specified by:

getMaxIndexNameLength in interface RDBMSAdapter

Overrides:

getMaxIndexNameLength in class DatabaseAdapter

Returns:

Max index name length

getMaxColumnNameLength

public int getMaxColumnNameLength()

Accessor for the maximum column name length permitted on this datastore.

Specified by:

getMaxColumnNameLength in interface RDBMSAdapter

Overrides:

getMaxColumnNameLength in class DatabaseAdapter

Returns:

Max column name length

getAddColumnStatement

public java.lang.String getAddColumnStatement(org.jpox.store.mapped.DatastoreContainerObject table,
                                              Column col)

Accessor for the SQL statement to add a column to a table.

Specified by:

getAddColumnStatement in interface RDBMSAdapter

Overrides:

getAddColumnStatement in class DatabaseAdapter

Parameters:

table - The table

col - The column

Returns:

The SQL necessary to add the column

getRangeByLimitSelectClause

public java.lang.String getRangeByLimitSelectClause(long offset,
                                                    long count)

Method to return the SQL to append to the SELECT clause of a SELECT statement to handle restriction of ranges using the LIMUT keyword.

Specified by:

getRangeByLimitSelectClause in interface RDBMSAdapter

Overrides:

getRangeByLimitSelectClause in class DatabaseAdapter

Parameters:

offset - The offset to return from

count - The number of items to return

Returns:

The SQL to append to allow for ranges using LIMIT.

newTypeInfo

public TypeInfo newTypeInfo(java.sql.ResultSet rs)

Factory for TypeInfo objects.

Overrides:

newTypeInfo in class DatabaseAdapter

Parameters:

rs - The ResultSet from DatabaseMetaData.getTypeInfo().

Returns:

A TypeInfo object.

supportsTransactionIsolationLevel

public boolean supportsTransactionIsolationLevel(int isolationLevel)

Accessor for whether the adapter supports the transaction isolation level HSQL 1.7.0 does not support Connection.setTransactionIsolation(isolationLevel); Up to and including 1.7.1, HSQLDB supports only TRANSACTION_READ_UNCOMMITTED.

Specified by:

supportsTransactionIsolationLevel in interface RDBMSAdapter

Overrides:

supportsTransactionIsolationLevel in class DatabaseAdapter

Parameters:

isolationLevel - the isolation level

Returns:

Whether the transaction isolation level setting is supported.

getRequiredTransactionIsolationLevel

public int getRequiredTransactionIsolationLevel()

Accessor for the "required" transaction isolation level if it has to be a certain value for this adapter.

Specified by:

getRequiredTransactionIsolationLevel in interface RDBMSAdapter

Overrides:

getRequiredTransactionIsolationLevel in class DatabaseAdapter

Returns:

Transaction isolation level (-1 implies no restriction)

supportsPrimaryKeyInCreateStatements

public boolean supportsPrimaryKeyInCreateStatements()

Whether the datastore supports specification of the primary key in CREATE TABLE statements.

Specified by:

supportsPrimaryKeyInCreateStatements in interface RDBMSAdapter

Overrides:

supportsPrimaryKeyInCreateStatements in class DatabaseAdapter

Returns:

Whetehr it allows "PRIMARY KEY ..."

supportsStatementGetGeneratedKeys

public boolean supportsStatementGetGeneratedKeys()

Whether the datastore supports Statement.getGeneratedKeys()

Specified by:

supportsStatementGetGeneratedKeys in interface RDBMSAdapter

Overrides:

supportsStatementGetGeneratedKeys in class DatabaseAdapter

Returns:

true if it is supported

supportsStatementBatching

public boolean supportsStatementBatching()

Whether this datastore supports batching of statements.

Specified by:

supportsStatementBatching in interface RDBMSAdapter

Overrides:

supportsStatementBatching in class DatabaseAdapter

Returns:

whether we can use statement batching

supportsAnalysisMethods

public boolean supportsAnalysisMethods()

Accessor for whether the SQL extensions CUBE, ROLLUP are supported.

Specified by:

supportsAnalysisMethods in interface RDBMSAdapter

Overrides:

supportsAnalysisMethods in class DatabaseAdapter

Returns:

Whether the SQL extensions CUBE, ROLLUP are supported.

getSchemaName

public java.lang.String getSchemaName(java.sql.Connection conn)
                               throws java.sql.SQLException

Accessor for the Schema Name for this datastore. HSQL 1.7.0 does not support schemas (catalog)

Specified by:

getSchemaName in interface RDBMSAdapter

Overrides:

getSchemaName in class DatabaseAdapter

Parameters:

conn - Connection to the datastore

Returns:

The schema name

Throws:

java.sql.SQLException - Thrown if error occurs in determining the schema name.

getAddPrimaryKeyStatement

public java.lang.String getAddPrimaryKeyStatement(PrimaryKey pk,
                                                  org.jpox.store.mapped.IdentifierFactory factory)

HSQL 1.7.0 does not support ALTER TABLE to define a primary key

Specified by:

getAddPrimaryKeyStatement in interface RDBMSAdapter

Overrides:

getAddPrimaryKeyStatement in class DatabaseAdapter

Parameters:

pk - An object describing the primary key.

factory - Identifier factory

Returns:

The PK statement

getDropTableStatement

public java.lang.String getDropTableStatement(org.jpox.store.mapped.DatastoreContainerObject table)

Returns the appropriate SQL to drop the given table. It should return something like:

 DROP TABLE FOO
 

Specified by:

getDropTableStatement in interface RDBMSAdapter

Overrides:

getDropTableStatement in class DatabaseAdapter

Parameters:

table - The table to drop.

Returns:

The text of the SQL statement.

newTableExpression

public org.jpox.store.mapped.expression.LogicSetExpression newTableExpression(org.jpox.store.mapped.expression.QueryExpression qs,
                                                                              org.jpox.store.mapped.DatastoreContainerObject table,
                                                                              org.jpox.store.mapped.DatastoreIdentifier rangeVar)

Return a new TableExpression appropriate to MySQL. MySQL does not support the TableExprAsSubjoins so instead we use TableExprAsJoins.

Specified by:

newTableExpression in interface RDBMSAdapter

Overrides:

newTableExpression in class DatabaseAdapter

Parameters:

qs - The QueryStatement to add the expression to

table - The table in the expression

rangeVar - range variable to assign to the expression.

Returns:

The expression.

supportsDeferredConstraints

public boolean supportsDeferredConstraints()

Whether we support deferred constraints in keys.

Specified by:

supportsDeferredConstraints in interface RDBMSAdapter

Overrides:

supportsDeferredConstraints in class DatabaseAdapter

Returns:

whether we support deferred constraints in keys.

supportsForeignKeyUpdateAction

public boolean supportsForeignKeyUpdateAction(ForeignKey.FKAction action)

Whether this datastore supports the specified foreign key update action

Specified by:

supportsForeignKeyUpdateAction in interface RDBMSAdapter

Overrides:

supportsForeignKeyUpdateAction in class DatabaseAdapter

Parameters:

action - The update action

Returns:

Whether it is supported

supportsForeignKeyDeleteAction

public boolean supportsForeignKeyDeleteAction(ForeignKey.FKAction action)

Whether this datastore supports the specified foreign key delete action

Specified by:

supportsForeignKeyDeleteAction in interface RDBMSAdapter

Overrides:

supportsForeignKeyDeleteAction in class DatabaseAdapter

Parameters:

action - The delete action

Returns:

Whether it is supported

supportsIdentityFields

public boolean supportsIdentityFields()

Whether we support autoincrementing fields.

Specified by:

supportsIdentityFields in interface org.jpox.store.mapped.DatastoreAdapter

Overrides:

supportsIdentityFields in class org.jpox.store.mapped.AbstractDatastoreAdapter

Returns:

whether we support autoincrementing fields.

getAutoIncrementStmt

public java.lang.String getAutoIncrementStmt(Table table,
                                             java.lang.String columnName)

Accessor for the auto-increment sql statement for this datastore.

Specified by:

getAutoIncrementStmt in interface RDBMSAdapter

Overrides:

getAutoIncrementStmt in class DatabaseAdapter

Parameters:

table - Name of the table that the autoincrement is for

columnName - Name of the column that the autoincrement is for

Returns:

The statement for getting the latest auto-increment key

getAutoIncrementKeyword

public java.lang.String getAutoIncrementKeyword()

Accessor for the auto-increment keyword for generating DDLs (CREATE TABLEs...).

Specified by:

getAutoIncrementKeyword in interface RDBMSAdapter

Overrides:

getAutoIncrementKeyword in class DatabaseAdapter

Returns:

The keyword for a column using auto-increment

getInsertStatementForNoColumns

public java.lang.String getInsertStatementForNoColumns(Table table)

Method to retutn the INSERT statement to use when inserting into a table that has no columns specified. This is the case when we have a single column in the table and that column is autoincrement/identity (and so is assigned automatically in the datastore).

Specified by:

getInsertStatementForNoColumns in interface RDBMSAdapter

Overrides:

getInsertStatementForNoColumns in class DatabaseAdapter

Parameters:

table - The table

Returns:

The INSERT statement

supportsUniqueConstraintsInEndCreateStatements

public boolean supportsUniqueConstraintsInEndCreateStatements()

Whether to allow Unique statements in the section of CREATE TABLE after the column definitions.

Specified by:

supportsUniqueConstraintsInEndCreateStatements in interface RDBMSAdapter

Overrides:

supportsUniqueConstraintsInEndCreateStatements in class DatabaseAdapter

Returns:

whether we can use UNIQUE after the column definitions CREATE TABLE.

See Also:

DatabaseAdapter.supportsUniqueConstraintsInEndCreateStatements()

supportsCheckInCreateStatements

public boolean supportsCheckInCreateStatements()

Whether this datastore supports the use of CHECK in CREATE TABLE statements (DDL). HSQL doesn't seem to support this.

Specified by:

supportsCheckInCreateStatements in interface RDBMSAdapter

Overrides:

supportsCheckInCreateStatements in class DatabaseAdapter

Returns:

whether we can use CHECK in CREATE TABLE.

supportsCheckConstraintsInEndCreateStatements

public boolean supportsCheckConstraintsInEndCreateStatements()

Whether this datastore supports the use of CHECK after the column definitions in CREATE TABLE statements (DDL). e.g. CREATE TABLE XXX ( COL_A int, COL_B char(1), PRIMARY KEY (COL_A), CHECK (COL_B IN ('Y','N')) )

Overrides:

supportsCheckConstraintsInEndCreateStatements in class DatabaseAdapter

Returns:

whether we can use CHECK after the column definitions in CREATE TABLE.

isValidPrimaryKeyType

public boolean isValidPrimaryKeyType(int datatype)

Accessor for whether the specified type is allow to be part of a PK.

Specified by:

isValidPrimaryKeyType in interface RDBMSAdapter

Overrides:

isValidPrimaryKeyType in class DatabaseAdapter

Parameters:

datatype - The JDBC type

Returns:

Whether it is permitted in the PK

modOperator

public org.jpox.store.mapped.expression.NumericExpression modOperator(org.jpox.store.mapped.expression.ScalarExpression operand1,
                                                                      org.jpox.store.mapped.expression.ScalarExpression operand2)

Method to generate a modulus expression. The binary % operator is said to yield the remainder of its operands from an implied division; the left-hand operand is the dividend and the right-hand operand is the divisor. This returns MOD(expr1, expr2).

Specified by:

modOperator in interface org.jpox.store.mapped.DatastoreAdapter

Specified by:

modOperator in interface org.jpox.store.mapped.expression.ExpressionOperatorAdapter

Overrides:

modOperator in class org.jpox.store.mapped.AbstractDatastoreAdapter

Parameters:

operand1 - the left expression

operand2 - the right expression

Returns:

The Expression for modulus

trimMethod

public org.jpox.store.mapped.expression.StringExpression trimMethod(org.jpox.store.mapped.expression.StringExpression str,
                                                                    boolean leading,
                                                                    boolean trailing)

Returns the appropriate SQL expression for the java query "trim" method. It should return something like:

LTRIM(RTRIM(str))

Specified by:

trimMethod in interface org.jpox.store.mapped.expression.ExpressionMethodAdapter

Overrides:

trimMethod in class DatabaseAdapter

Parameters:

str - The first argument to the trim() method.

leading - Whether to trim leading spaces

trailing - Whether to trim trailing spaces

Returns:

The text of the SQL expression.

getDatastoreDateStatement

public java.lang.String getDatastoreDateStatement()

Accessor for a statement that will return the statement to use to get the datastore date.

Specified by:

getDatastoreDateStatement in interface RDBMSAdapter

Overrides:

getDatastoreDateStatement in class DatabaseAdapter

Returns:

SQL statement to get the datastore date

supportsSequences

public boolean supportsSequences()

Whether we support sequences.

Specified by:

supportsSequences in interface org.jpox.store.mapped.DatastoreAdapter

Specified by:

supportsSequences in interface RDBMSAdapter

Overrides:

supportsSequences in class org.jpox.store.mapped.AbstractDatastoreAdapter

Returns:

whether we support sequences.

getSequenceCreateStmt

public java.lang.String getSequenceCreateStmt(java.lang.String sequence_name,
                                              java.lang.String min,
                                              java.lang.String max,
                                              java.lang.String start,
                                              java.lang.String increment,
                                              java.lang.String cache_size)

Accessor for the sequence statement to create the sequence.

Specified by:

getSequenceCreateStmt in interface RDBMSAdapter

Overrides:

getSequenceCreateStmt in class DatabaseAdapter

Parameters:

sequence_name - Name of the sequence

min - Minimum value for the sequence

max - Maximum value for the sequence

start - Start value for the sequence

increment - Increment value for the sequence

cache_size - Cache size for the sequence

Returns:

The statement for getting the next id from the sequence

getSequenceNextStmt

public java.lang.String getSequenceNextStmt(java.lang.String sequence_name)

Accessor for the statement for getting the next id from the sequence for this datastore.

Specified by:

getSequenceNextStmt in interface RDBMSAdapter

Overrides:

getSequenceNextStmt in class DatabaseAdapter

Parameters:

sequence_name - Name of the sequence

Returns:

The statement for getting the next id for the sequence