com.holonplatform.datastore.jdbc.composer.dialect

Class DerbyDialect

java.lang.Object

com.holonplatform.datastore.jdbc.composer.dialect.DerbyDialect

All Implemented Interfaces:

SQLDialect, Serializable

public class DerbyDialect
extends Object
implements SQLDialect

Derby SQLDialect.

Since:

5.1.0

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface com.holonplatform.datastore.jdbc.composer.SQLDialect

SQLDialect.LimitHandler

Constructor Summary

Constructors

Constructor and Description
DerbyDialect()

Method Summary

Modifier and Type	Method and Description
boolean	generatedKeyAlwaysReturned() Retrieves whether a generated key will always be returned if the column name(s) or index(es) specified for the auto generated key column(s) are valid and the statement succeeds.
String	getColumnName(String columnName) Get the actual column name for given column name (for example, applying case transformations)
Optional<SQLDialect.LimitHandler>	getLimitHandler() Get the SQLDialect.LimitHandler
Optional<String>	getLockClause(com.holonplatform.core.query.lock.LockMode mode, long timeout) Get the SQL lock clause for given lock condition.
Optional<SQLType>	getSqlType(Class<?> javaType) Get the SQL type which corresponds to given Java type for this dialect.
String	getTableName(String tableName) Get the actual table name for given table name (for example, applying case transformations)
void	init(SQLDialectContext context) Dialect initialization hook at parent datastore initialization.
Optional<SQLFunction>	resolveFunction(com.holonplatform.core.query.QueryFunction<?,?> function) Resolve given function into a dialect-specific SQLFunction.
boolean	supportGetGeneratedKeyByName() Retrieves whether auto-generated keys can be retrieved by name after a statement has been executed.
boolean	supportsGetGeneratedKeys() Retrieves whether auto-generated keys can be retrieved after a statement has been executed.
boolean	supportsLikeEscapeClause() Retrieves whether this database supports specifying a LIKE escape clause.
boolean	supportsSqlType(int sqlType) Get whether given SQL type is supported by this dialect.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.holonplatform.datastore.jdbc.composer.SQLDialect

db2, deleteStatementAliasSupported, deleteStatementTargetRequired, derby, detect, getJavaType, getLockHint, h2, HANA, hsqldb, informix, mariaDB, mySQL, oracle, postgreSQL, sqlite, sqlServer, supportsBinaryStreamParameter, translateException, updateStatementAliasSupported, updateStatementFromSupported, updateStatementSetAliasSupported, useOuterInJoins

Constructor Detail

DerbyDialect

public DerbyDialect()

Method Detail

init

public void init(SQLDialectContext context)
          throws SQLException

Description copied from interface: SQLDialect

Dialect initialization hook at parent datastore initialization.

Specified by:

init in interface SQLDialect

Parameters:

context - Dialect context

Throws:

SQLException - An error occurred during dialect initialization

resolveFunction

public Optional<SQLFunction> resolveFunction(com.holonplatform.core.query.QueryFunction<?,?> function)

Description copied from interface: SQLDialect

Resolve given function into a dialect-specific SQLFunction.

Specified by:

resolveFunction in interface SQLDialect

Parameters:

function - The function to resolve (not null)

Returns:

A dialect-specific function resolution, or empty to fallback to the default function resolution, if available

supportsSqlType

public boolean supportsSqlType(int sqlType)

Description copied from interface: SQLDialect

Get whether given SQL type is supported by this dialect.

Specified by:

supportsSqlType in interface SQLDialect

Parameters:

sqlType - The SQL type id

Returns:

true if type is supported, false otherwise

See Also:

Types

getSqlType

public Optional<SQLType> getSqlType(Class<?> javaType)

Description copied from interface: SQLDialect

Get the SQL type which corresponds to given Java type for this dialect.

Specified by:

getSqlType in interface SQLDialect

Parameters:

javaType - The sql type (not null)

Returns:

Optional SQL type, empty to use default

supportsLikeEscapeClause

public boolean supportsLikeEscapeClause()

Description copied from interface: SQLDialect

Retrieves whether this database supports specifying a LIKE escape clause.

Specified by:

supportsLikeEscapeClause in interface SQLDialect

Returns:

true if so; false otherwise

supportsGetGeneratedKeys

public boolean supportsGetGeneratedKeys()

Description copied from interface: SQLDialect

Retrieves whether auto-generated keys can be retrieved after a statement has been executed.

Specified by:

supportsGetGeneratedKeys in interface SQLDialect

Returns:

true if auto-generated keys can be retrieved after a statement has executed; false otherwise

generatedKeyAlwaysReturned

public boolean generatedKeyAlwaysReturned()

Description copied from interface: SQLDialect

Retrieves whether a generated key will always be returned if the column name(s) or index(es) specified for the auto generated key column(s) are valid and the statement succeeds. The key that is returned may or may not be based on the column(s) for the auto generated key.

Specified by:

generatedKeyAlwaysReturned in interface SQLDialect

Returns:

true if so; false otherwise

supportGetGeneratedKeyByName

public boolean supportGetGeneratedKeyByName()

Description copied from interface: SQLDialect

Retrieves whether auto-generated keys can be retrieved by name after a statement has been executed.

Specified by:

supportGetGeneratedKeyByName in interface SQLDialect

Returns:

true if auto-generated keys can be retrieved by name after a statement has executed

getTableName

public String getTableName(String tableName)

Description copied from interface: SQLDialect

Get the actual table name for given table name (for example, applying case transformations)

Specified by:

getTableName in interface SQLDialect

Parameters:

tableName - Table name

Returns:

The actual table name

getColumnName

public String getColumnName(String columnName)

Description copied from interface: SQLDialect

Get the actual column name for given column name (for example, applying case transformations)

Specified by:

getColumnName in interface SQLDialect

Parameters:

columnName - Column name

Returns:

The actual column name

getLockClause

public Optional<String> getLockClause(com.holonplatform.core.query.lock.LockMode mode,
                                      long timeout)

Description copied from interface: SQLDialect

Get the SQL lock clause for given lock condition.

Specified by:

getLockClause in interface SQLDialect

Parameters:

mode - Lock mode

timeout - Lock timeout in milliseconds

Returns:

Optional SQL lock clause

getLimitHandler

public Optional<SQLDialect.LimitHandler> getLimitHandler()

Description copied from interface: SQLDialect

Get the SQLDialect.LimitHandler

Specified by:

getLimitHandler in interface SQLDialect

Returns:

Optional limit handler