类 SybaseAnywhereDialect

  • 所有已实现的接口:
    ConversionContext

    public class SybaseAnywhereDialect
    extends SybaseDialect
    SQL Dialect for Sybase Anywhere extending Sybase (Enterprise) Dialect (Tested on ASA 8.x)
    • 构造器详细资料

      • SybaseAnywhereDialect

        public SybaseAnywhereDialect()
    • 方法详细资料

      • getNoColumnsInsertString

        public String getNoColumnsInsertString()
        Sybase Anywhere syntax would require a "DEFAULT" for each column specified, but I suppose Hibernate use this syntax only with tables with just 1 column

        The fragment used to insert a row without specifying any column values. This is not possible on some databases.

        覆盖:
        getNoColumnsInsertString 在类中 Dialect
        返回:
        The appropriate empty values clause.
      • dropConstraints

        public boolean dropConstraints()
        ASA does not require to drop constraint before dropping tables, so disable it.

        NOTE : Also, the DROP statement syntax used by Hibernate to drop constraints is not compatible with ASA.

        Do we need to drop constraints before dropping tables in this dialect?

        覆盖:
        dropConstraints 在类中 Dialect
        返回:
        True if constraints must be dropped prior to dropping the table; false otherwise.
      • getAddColumnString

        public String getAddColumnString()
        从类复制的说明: Dialect
        The syntax used to add a column to a table (optional).
        覆盖:
        getAddColumnString 在类中 Dialect
        返回:
        The "add column" fragment.
      • qualifyIndexName

        public boolean qualifyIndexName()
        从类复制的说明: Dialect
        Do we need to qualify index names with the schema name?
        覆盖:
        qualifyIndexName 在类中 Dialect
        返回:
        boolean
      • getForUpdateString

        public String getForUpdateString()
        从类复制的说明: Dialect
        Get the string to append to SELECT statements to acquire locks for this dialect.
        覆盖:
        getForUpdateString 在类中 Dialect
        返回:
        The appropriate FOR UPDATE clause string.
      • appendLockHint

        public String appendLockHint​(LockOptions lockOptions,
                                     String tableName)
        从类复制的说明: Dialect
        Some dialects support an alternative means to SELECT FOR UPDATE, whereby a "lock hint" is appended to the table name in the from clause.

        contributed by Helge Schulz

        覆盖:
        appendLockHint 在类中 Dialect
        参数:
        lockOptions - The lock options to apply
        tableName - The name of the table to which to apply the lock hint.
        返回:
        The table with any required lock hints.
      • applyLocksToSql

        public String applyLocksToSql​(String sql,
                                      LockOptions aliasedLockOptions,
                                      Map<String,​String[]> keyColumnNames)
        从类复制的说明: Dialect
        Modifies the given SQL by applying the appropriate updates for the specified lock modes and key columns.

        The behavior here is that of an ANSI SQL SELECT FOR UPDATE. This method is really intended to allow dialects which do not support SELECT FOR UPDATE to achieve this in their own fashion.

        覆盖:
        applyLocksToSql 在类中 Dialect
        参数:
        sql - the SQL string to modify
        aliasedLockOptions - lock options indexed by aliased table names.
        keyColumnNames - a map of key columns indexed by aliased table names.
        返回:
        the modified SQL string.
      • registerResultSetOutParameter

        public int registerResultSetOutParameter​(CallableStatement statement,
                                                 int col)
                                          throws SQLException
        从类复制的说明: Dialect
        Registers a parameter (either OUT, or the new REF_CURSOR param type available in Java 8) capable of returning ResultSet *by position*. Pre-Java 8, registering such ResultSet-returning parameters varied greatly across database and drivers; hence its inclusion as part of the Dialect contract.
        覆盖:
        registerResultSetOutParameter 在类中 Dialect
        参数:
        statement - The callable statement.
        col - The bind position at which to register the output param.
        返回:
        The number of (contiguous) bind positions used.
        抛出:
        SQLException - Indicates problems registering the param.
      • supportsCurrentTimestampSelection

        public boolean supportsCurrentTimestampSelection()
        从类复制的说明: Dialect
        Does this dialect support a way to retrieve the database's current timestamp value?
        覆盖:
        supportsCurrentTimestampSelection 在类中 Dialect
        返回:
        True if the current timestamp can be retrieved; false otherwise.
      • getCurrentTimestampSelectString

        public String getCurrentTimestampSelectString()
        从类复制的说明: Dialect
        Retrieve the command used to retrieve the current timestamp from the database.
        覆盖:
        getCurrentTimestampSelectString 在类中 Dialect
        返回:
        The command.
      • getSelectGUIDString

        public String getSelectGUIDString()
        从类复制的说明: Dialect
        Get the command used to select a GUID from the underlying database.

        Optional operation.

        覆盖:
        getSelectGUIDString 在类中 Dialect
        返回:
        The appropriate command.
      • supportsEmptyInList

        public boolean supportsEmptyInList()
        从类复制的说明: Dialect
        Does this dialect support empty IN lists?

        For example, is [where XYZ in ()] a supported construct?

        覆盖:
        supportsEmptyInList 在类中 Dialect
        返回:
        True if empty in lists are supported; false otherwise.
      • supportsUnionAll

        public boolean supportsUnionAll()
        从类复制的说明: Dialect
        Does this dialect support UNION ALL, which is generally a faster variant of UNION?
        覆盖:
        supportsUnionAll 在类中 Dialect
        返回:
        True if UNION ALL is supported; false otherwise.
      • supportsExistsInSelect

        public boolean supportsExistsInSelect()
        从类复制的说明: Dialect
        Does the dialect support an exists statement in the select clause?
        覆盖:
        supportsExistsInSelect 在类中 Dialect
        返回:
        True if exists checks are allowed in the select clause; false otherwise.
      • doesReadCommittedCauseWritersToBlockReaders

        public boolean doesReadCommittedCauseWritersToBlockReaders()
        从类复制的说明: Dialect
        For the underlying database, is READ_COMMITTED isolation implemented by forcing readers to wait for write locks to be released?
        覆盖:
        doesReadCommittedCauseWritersToBlockReaders 在类中 Dialect
        返回:
        True if writers block readers to achieve READ_COMMITTED; false otherwise.
      • doesRepeatableReadCauseReadersToBlockWriters

        public boolean doesRepeatableReadCauseReadersToBlockWriters()
        从类复制的说明: Dialect
        For the underlying database, is REPEATABLE_READ isolation implemented by forcing writers to wait for read locks to be released?
        覆盖:
        doesRepeatableReadCauseReadersToBlockWriters 在类中 Dialect
        返回:
        True if readers block writers to achieve REPEATABLE_READ; false otherwise.
      • supportsTupleDistinctCounts

        public boolean supportsTupleDistinctCounts()
        从类复制的说明: Dialect
        Does this dialect support `count(distinct a,b)`?
        覆盖:
        supportsTupleDistinctCounts 在类中 Dialect
        返回:
        True if the database supports counting distinct tuples; false otherwise.
      • supportsTuplesInSubqueries

        public boolean supportsTuplesInSubqueries()
        从类复制的说明: Dialect
        Does this dialect support tuples in subqueries? Ex: delete from Table1 where (col1, col2) in (select col1, col2 from Table2)
        覆盖:
        supportsTuplesInSubqueries 在类中 Dialect
        返回:
        boolean
      • supportsPartitionBy

        public boolean supportsPartitionBy()
        从类复制的说明: Dialect
        Does the underlying database support partition by
        覆盖:
        supportsPartitionBy 在类中 Dialect
        返回:
        boolean