Java Doc for TemporaryRowHolderImpl.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » impl » sql » execute » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.impl.sql.execute   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.derby.impl.sql.execute.TemporaryRowHolderImpl TemporaryRowHolderImpl class TemporaryRowHolderImpl implements TemporaryRowHolder(Code) This is a class that is used to temporarily (non-persistently) hold rows that are used in language execution. It will store them in an array, or a temporary conglomerate, depending on the number of rows. It is used for deferred DML processing. author:    jamie Field Summary protected  long CID      final public static  int DEFAULT_OVERFLOWTHRESHOLD      final protected static  int STATE_DRAIN      final protected static  int STATE_INSERT      final protected static  int STATE_UNINIT       Activation activation      Activation object with local state information. protected  int lastArraySlot      protected  ExecRow[] rowArray      protected  int state      Constructor Summary public   TemporaryRowHolderImpl(Activation activation, Properties properties, ResultDescription resultDescription)      Uses the default overflow to a conglomerate threshold (5). Parameters:   activation - the activation Parameters:   properties - the properties of the original table. public   TemporaryRowHolderImpl(Activation activation, Properties properties, ResultDescription resultDescription, boolean isUniqueStream)      Uses the default overflow to a conglomerate threshold (5). Parameters:   activation - the activation Parameters:   properties - the properties of the original table. public   TemporaryRowHolderImpl(Activation activation, Properties properties, ResultDescription resultDescription, int overflowToConglomThreshold, boolean isUniqueStream, boolean isVirtualMemHeap)      Create a temporary row holder with the defined overflow to conglom Parameters:   activation - the activation Parameters:   properties - the properties of the original table. Method Summary public  void close()      public  long getPositionIndexConglomId()      public  CursorResultSet getResultSet()      Get a result set for scanning what has been inserted so far. public  long getTemporaryConglomId()      public  void insert(ExecRow inputRow)      public  void setRowHolderTypeToUniqueStream()      public  void truncate()      Purge the row holder of all its rows. Resets the row holder so that it can accept new inserts. Field Detail CID protected long CID(Code) DEFAULT_OVERFLOWTHRESHOLD final public static int DEFAULT_OVERFLOWTHRESHOLD(Code) STATE_DRAIN final protected static int STATE_DRAIN(Code) STATE_INSERT final protected static int STATE_INSERT(Code) STATE_UNINIT final protected static int STATE_UNINIT(Code) activation Activation activation(Code) Activation object with local state information. lastArraySlot protected int lastArraySlot(Code) rowArray protected ExecRow[] rowArray(Code) state protected int state(Code) Constructor Detail TemporaryRowHolderImpl public TemporaryRowHolderImpl(Activation activation, Properties properties, ResultDescription resultDescription)(Code) Uses the default overflow to a conglomerate threshold (5). Parameters:   activation - the activation Parameters:   properties - the properties of the original table. Usedto help the store use optimal page size, etc. Parameters:   resultDescription - the result description. Relevant for the getResultDescriptioncall on the result set returned by getResultSet. May be null TemporaryRowHolderImpl public TemporaryRowHolderImpl(Activation activation, Properties properties, ResultDescription resultDescription, boolean isUniqueStream)(Code) Uses the default overflow to a conglomerate threshold (5). Parameters:   activation - the activation Parameters:   properties - the properties of the original table. Usedto help the store use optimal page size, etc. Parameters:   resultDescription - the result description. Relevant for the getResultDescriptioncall on the result set returned by getResultSet. May be null Parameters:   isUniqueStream - - true , if it has to be temporary row holder unique stream TemporaryRowHolderImpl public TemporaryRowHolderImpl(Activation activation, Properties properties, ResultDescription resultDescription, int overflowToConglomThreshold, boolean isUniqueStream, boolean isVirtualMemHeap)(Code) Create a temporary row holder with the defined overflow to conglom Parameters:   activation - the activation Parameters:   properties - the properties of the original table. Usedto help the store use optimal page size, etc. Parameters:   resultDescription - the result description. Relevant for the getResultDescriptioncall on the result set returned by getResultSet. May be null Parameters:   overflowToConglomThreshold - on an attempt to insertthis number of rows, the rows will be putinto a temporary conglomerate. Method Detail close public void close() throws StandardException(Code) Clean up exception:   StandardException - on error getPositionIndexConglomId public long getPositionIndexConglomId()(Code) getResultSet public CursorResultSet getResultSet()(Code) Get a result set for scanning what has been inserted so far. a result set to use getTemporaryConglomId public long getTemporaryConglomId()(Code) insert public void insert(ExecRow inputRow) throws StandardException(Code) Insert a row Parameters:   inputRow - the row to insert exception:   StandardException - on error setRowHolderTypeToUniqueStream public void setRowHolderTypeToUniqueStream()(Code) truncate public void truncate() throws StandardException(Code) Purge the row holder of all its rows. Resets the row holder so that it can accept new inserts. A cheap way to recycle a row holder. exception:   StandardException - on error Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)