Package org.hibernate.dialect

Class Oracle8iDialect

java.lang.Object
org.hibernate.dialect.Dialect
org.hibernate.dialect.Oracle8iDialect
Direct Known Subclasses:
Oracle9iDialect
public class Oracle8iDialect extends Dialect
A dialect for Oracle 8i.

  • Field Details

  • Constructor Details

    • Oracle8iDialect

      public Oracle8iDialect()

  • Method Details

    • registerCharacterTypeMappings

      protected void registerCharacterTypeMappings()

    • registerNumericTypeMappings

      protected void registerNumericTypeMappings()

    • registerDateTimeTypeMappings

      protected void registerDateTimeTypeMappings()

    • registerLargeObjectTypeMappings

      protected void registerLargeObjectTypeMappings()

    • registerReverseHibernateTypeMappings

      protected void registerReverseHibernateTypeMappings()

    • registerFunctions

      protected void registerFunctions()

    • registerDefaultProperties

      protected void registerDefaultProperties()

    • createOuterJoinFragment

      public JoinFragment createOuterJoinFragment()
      Support for the oracle proprietary join syntax...
      Overrides:
      createOuterJoinFragment in class Dialect
      Returns:
      The orqacle join fragment

    • getCrossJoinSeparator

      public String getCrossJoinSeparator()
      Get the separator to use for defining cross joins when translating HQL queries.

      Typically this will be either [ cross join ] or [, ]

      Note that the spaces are important!

      Overrides:
      getCrossJoinSeparator in class Dialect
      Returns:

    • createCaseFragment

      public CaseFragment createCaseFragment()
      Map case support to the Oracle DECODE function. Oracle did not add support for CASE until 9i.
      Overrides:
      createCaseFragment in class Dialect
      Returns:
      The oracle CASE -> DECODE fragment

    • getLimitString

      public String getLimitString(String sql, boolean hasOffset)
      Description copied from class: Dialect
      Apply s limit clause to the query.

      Typically dialects utilize variable limit clauses when they support limits. Thus, when building the select command we do not actually need to know the limit or the offest since we will just be using placeholders.

      Here we do still pass along whether or not an offset was specified so that dialects not supporting offsets can generate proper exceptions. In general, dialects will override one or the other of this method and Dialect.getLimitString(String, int, int).

      Overrides:
      getLimitString in class Dialect
      Parameters:
      sql - The query to which to apply the limit.
      hasOffset - Is the query requesting an offset?
      Returns:
      the modified SQL

    • getBasicSelectClauseNullString

      public String getBasicSelectClauseNullString(int sqlType)
      Allows access to the basic Dialect.getSelectClauseNullString(int) implementation...
      Parameters:
      sqlType - The Types mapping type code
      Returns:
      The appropriate select cluse fragment

    • getSelectClauseNullString

      public String getSelectClauseNullString(int sqlType)
      Description copied from class: Dialect
      Given a Types type code, determine an appropriate null value to use in a select clause.

      One thing to consider here is that certain databases might require proper casting for the nulls here since the select here will be part of a UNION/UNION ALL.

      Overrides:
      getSelectClauseNullString in class Dialect
      Parameters:
      sqlType - The Types type code.
      Returns:
      The appropriate select clause value fragment.

    • getCurrentTimestampSelectString

      public String getCurrentTimestampSelectString()
      Description copied from class: Dialect
      Retrieve the command used to retrieve the current timestamp from the database.
      Overrides:
      getCurrentTimestampSelectString in class Dialect
      Returns:
      The command.

    • getCurrentTimestampSQLFunctionName

      public String getCurrentTimestampSQLFunctionName()
      Description copied from class: Dialect
      The name of the database-specific SQL function for retrieving the current timestamp.
      Overrides:
      getCurrentTimestampSQLFunctionName in class Dialect
      Returns:
      The function name.

    • getAddColumnString

      public String getAddColumnString()
      Description copied from class: Dialect
      The syntax used to add a column to a table (optional).
      Overrides:
      getAddColumnString in class Dialect
      Returns:
      The "add column" fragment.

    • getSequenceNextValString

      public String getSequenceNextValString(String sequenceName)
      Description copied from class: Dialect
      Generate the appropriate select statement to to retrieve the next value of a sequence.

      This should be a "stand alone" select statement.

      Overrides:
      getSequenceNextValString in class Dialect
      Parameters:
      sequenceName - the name of the sequence
      Returns:
      String The "nextval" select string.

    • getSelectSequenceNextValString

      public String getSelectSequenceNextValString(String sequenceName)
      Description copied from class: Dialect
      Generate the select expression fragment that will retrieve the next value of a sequence as part of another (typically DML) statement.

      This differs from Dialect.getSequenceNextValString(String) in that this should return an expression usable within another statement.

      Overrides:
      getSelectSequenceNextValString in class Dialect
      Parameters:
      sequenceName - the name of the sequence
      Returns:
      The "nextval" fragment.

    • getCreateSequenceString

      public String getCreateSequenceString(String sequenceName)
      Description copied from class: Dialect
      Typically dialects which support sequences can create a sequence with a single command. This is convenience form of Dialect.getCreateSequenceStrings(java.lang.String) to help facilitate that.

      Dialects which support sequences and can create a sequence in a single command need *only* override this method. Dialects which support sequences but require multiple commands to create a sequence should instead override Dialect.getCreateSequenceStrings(java.lang.String).

      Overrides:
      getCreateSequenceString in class Dialect
      Parameters:
      sequenceName - The name of the sequence
      Returns:
      The sequence creation command

    • getDropSequenceString

      public String getDropSequenceString(String sequenceName)
      Description copied from class: Dialect
      Typically dialects which support sequences can drop a sequence with a single command. This is convenience form of Dialect.getDropSequenceStrings(java.lang.String) to help facilitate that.

      Dialects which support sequences and can drop a sequence in a single command need *only* override this method. Dialects which support sequences but require multiple commands to drop a sequence should instead override Dialect.getDropSequenceStrings(java.lang.String).

      Overrides:
      getDropSequenceString in class Dialect
      Parameters:
      sequenceName - The name of the sequence
      Returns:
      The sequence drop commands

    • getCascadeConstraintsString

      public String getCascadeConstraintsString()
      Description copied from class: Dialect
      Completely optional cascading drop clause
      Overrides:
      getCascadeConstraintsString in class Dialect
      Returns:
      String

    • dropConstraints

      public boolean dropConstraints()
      Description copied from class: Dialect
      Do we need to drop constraints before dropping tables in this dialect?
      Overrides:
      dropConstraints in class Dialect
      Returns:
      True if constraints must be dropped prior to dropping the table; false otherwise.

    • getForUpdateNowaitString

      public String getForUpdateNowaitString()
      Description copied from class: Dialect
      Retrieves the FOR UPDATE NOWAIT syntax specific to this dialect.
      Overrides:
      getForUpdateNowaitString in class Dialect
      Returns:
      The appropriate FOR UPDATE NOWAIT clause string.

    • supportsSequences

      public boolean supportsSequences()
      Description copied from class: Dialect
      Does this dialect support sequences?
      Overrides:
      supportsSequences in class Dialect
      Returns:
      True if sequences supported; false otherwise.

    • supportsPooledSequences

      public boolean supportsPooledSequences()
      Description copied from class: Dialect
      Does this dialect support "pooled" sequences. Not aware of a better name for this. Essentially can we specify the initial and increment values?
      Overrides:
      supportsPooledSequences in class Dialect
      Returns:
      True if such "pooled" sequences are supported; false otherwise.
      See Also:

    • supportsLimit

      public boolean supportsLimit()
      Description copied from class: Dialect
      Does this dialect support some form of limiting query results via a SQL clause?
      Overrides:
      supportsLimit in class Dialect
      Returns:
      True if this dialect supports some form of LIMIT.

    • getForUpdateString

      public String getForUpdateString(String aliases)
      Description copied from class: Dialect
      Get the FOR UPDATE OF column_list fragment appropriate for this dialect given the aliases of the columns to be write locked.
      Overrides:
      getForUpdateString in class Dialect
      Parameters:
      aliases - The columns to be write locked.
      Returns:
      The appropriate FOR UPDATE OF column_list clause string.

    • getForUpdateNowaitString

      public String getForUpdateNowaitString(String aliases)
      Description copied from class: Dialect
      Get the FOR UPDATE OF column_list NOWAIT fragment appropriate for this dialect given the aliases of the columns to be write locked.
      Overrides:
      getForUpdateNowaitString in class Dialect
      Parameters:
      aliases - The columns to be write locked.
      Returns:
      The appropriate FOR UPDATE OF colunm_list NOWAIT clause string.

    • bindLimitParametersInReverseOrder

      public boolean bindLimitParametersInReverseOrder()
      Description copied from class: Dialect
      ANSI SQL defines the LIMIT clause to be in the form LIMIT offset, limit. Does this dialect require us to bind the parameters in reverse order?
      Overrides:
      bindLimitParametersInReverseOrder in class Dialect
      Returns:
      true if the correct order is limit, offset

    • useMaxForLimit

      public boolean useMaxForLimit()
      Description copied from class: Dialect
      Does the LIMIT clause take a "maximum" row number instead of a total number of returned rows?

      This is easiest understood via an example. Consider you have a table with 20 rows, but you only want to retrieve rows number 11 through 20. Generally, a limit with offset would say that the offset = 11 and the limit = 10 (we only want 10 rows at a time); this is specifying the total number of returned rows. Some dialects require that we instead specify offset = 11 and limit = 20, where 20 is the "last" row we want relative to offset (i.e. total number of rows = 20 - 11 = 9)

      So essentially, is limit relative from offset? Or is limit absolute?

      Overrides:
      useMaxForLimit in class Dialect
      Returns:
      True if limit is relative from offset; false otherwise.

    • forUpdateOfColumns

      public boolean forUpdateOfColumns()
      Description copied from class: Dialect
      Is FOR UPDATE OF syntax supported?
      Overrides:
      forUpdateOfColumns in class Dialect
      Returns:
      True if the database supports FOR UPDATE OF syntax; false otherwise.

    • getQuerySequencesString

      public String getQuerySequencesString()
      Description copied from class: Dialect
      Get the select command used retrieve the names of all sequences.
      Overrides:
      getQuerySequencesString in class Dialect
      Returns:
      The select command; or null if sequences are not supported.
      See Also:

    • getSelectGUIDString

      public String getSelectGUIDString()
      Description copied from class: Dialect
      Get the command used to select a GUID from the underlying database.

      Optional operation.

      Overrides:
      getSelectGUIDString in class Dialect
      Returns:
      The appropriate command.

    • getViolatedConstraintNameExtracter

      public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter()
      Overrides:
      getViolatedConstraintNameExtracter in class Dialect

    • getOracleCursorTypeSqlType

      public int getOracleCursorTypeSqlType()

    • extractOracleCursorTypeValue

      protected int extractOracleCursorTypeValue()

    • registerResultSetOutParameter

      public int registerResultSetOutParameter(CallableStatement statement, int col) throws SQLException
      Description copied from class: Dialect
      Registers an OUT parameter which will be returning a ResultSet. How this is accomplished varies greatly from DB to DB, hence its inclusion (along with Dialect.getResultSet(java.sql.CallableStatement)) here.
      Overrides:
      registerResultSetOutParameter in class Dialect
      Parameters:
      statement - The callable statement.
      col - The bind position at which to register the OUT param.
      Returns:
      The number of (contiguous) bind positions used.
      Throws:
      SQLException - Indicates problems registering the OUT param.

    • getResultSet

      public ResultSet getResultSet(CallableStatement ps) throws SQLException
      Description copied from class: Dialect
      Given a callable statement previously processed by Dialect.registerResultSetOutParameter(java.sql.CallableStatement, int), extract the ResultSet from the OUT parameter.
      Overrides:
      getResultSet in class Dialect
      Parameters:
      ps - The callable statement.
      Returns:
      The extracted result set.
      Throws:
      SQLException - Indicates problems extracting the result set.

    • supportsUnionAll

      public boolean supportsUnionAll()
      Description copied from class: Dialect
      Does this dialect support UNION ALL, which is generally a faster variant of UNION?
      Overrides:
      supportsUnionAll in class Dialect
      Returns:
      True if UNION ALL is supported; false otherwise.

    • supportsCommentOn

      public boolean supportsCommentOn()
      Overrides:
      supportsCommentOn in class Dialect

    • supportsTemporaryTables

      public boolean supportsTemporaryTables()
      Description copied from class: Dialect
      Does this dialect support temporary tables?
      Overrides:
      supportsTemporaryTables in class Dialect
      Returns:
      True if temp tables are supported; false otherwise.

    • generateTemporaryTableName

      public String generateTemporaryTableName(String baseTableName)
      Description copied from class: Dialect
      Generate a temporary table name given the base table.
      Overrides:
      generateTemporaryTableName in class Dialect
      Parameters:
      baseTableName - The table name from which to base the temp table name.
      Returns:
      The generated temp table name.

    • getCreateTemporaryTableString

      public String getCreateTemporaryTableString()
      Description copied from class: Dialect
      Command used to create a temporary table.
      Overrides:
      getCreateTemporaryTableString in class Dialect
      Returns:
      The command used to create a temporary table.

    • getCreateTemporaryTablePostfix

      public String getCreateTemporaryTablePostfix()
      Description copied from class: Dialect
      Get any fragments needing to be postfixed to the command for temporary table creation.
      Overrides:
      getCreateTemporaryTablePostfix in class Dialect
      Returns:
      Any required postfix.

    • dropTemporaryTableAfterUse

      public boolean dropTemporaryTableAfterUse()
      Description copied from class: Dialect
      Do we need to drop the temporary table after use?
      Overrides:
      dropTemporaryTableAfterUse in class Dialect
      Returns:
      True if the table should be dropped.

    • supportsCurrentTimestampSelection

      public boolean supportsCurrentTimestampSelection()
      Description copied from class: Dialect
      Does this dialect support a way to retrieve the database's current timestamp value?
      Overrides:
      supportsCurrentTimestampSelection in class Dialect
      Returns:
      True if the current timestamp can be retrieved; false otherwise.

    • isCurrentTimestampSelectStringCallable

      public boolean isCurrentTimestampSelectStringCallable()
      Description copied from class: Dialect
      Should the value returned by Dialect.getCurrentTimestampSelectString() be treated as callable. Typically this indicates that JDBC escape syntax is being used...
      Overrides:
      isCurrentTimestampSelectStringCallable in class Dialect
      Returns:
      True if the Dialect.getCurrentTimestampSelectString() return is callable; false otherwise.

    • supportsEmptyInList

      public boolean supportsEmptyInList()
      Description copied from class: Dialect
      Does this dialect support empty IN lists?

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

      Overrides:
      supportsEmptyInList in class Dialect
      Returns:
      True if empty in lists are supported; false otherwise.

    • supportsExistsInSelect

      public boolean supportsExistsInSelect()
      Description copied from class: Dialect
      Does the dialect support an exists statement in the select clause?
      Overrides:
      supportsExistsInSelect in class Dialect
      Returns:
      True if exists checks are allowed in the select clause; false otherwise.