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SUMMARY: JavaDoc of org.apache.derby.impl.sql.GenericActivationHolder JAVADOC | Sourc code of org.apache.derby.impl.sql.GenericActivationHolder SOURCE | Download org.apache.derby.impl.sql.GenericActivationHolder DOWNLOAD | NESTED | FIELD | CONSTR | METHOD DETAIL: FIELD | CONSTR | METHOD

org.apache.derby.impl.sql
Class GenericActivationHolder  view GenericActivationHolder download GenericActivationHolder.java

java.lang.Object
  extended byorg.apache.derby.impl.sql.GenericActivationHolder
All Implemented Interfaces:
org.apache.derby.iapi.sql.Activation
final class GenericActivationHolder
extends java.lang.Object
implements org.apache.derby.iapi.sql.Activation

This class holds an Activation, and passes through most of the calls to the activation. The purpose of this class is to allow a PreparedStatement to be recompiled without the caller having to detect this and get a new activation. In addition to the Activation, this class holds a reference to the PreparedStatement that created it, along with a reference to the GeneratedClass that was associated with the PreparedStatement at the time this holder was created. These references are used to validate the Activation, to ensure that an activation is used only with the PreparedStatement that created it, and to detect when recompilation has happened. We detect recompilation by checking whether the GeneratedClass has changed. If it has, we try to let the caller continue to use this ActivationHolder. We create a new instance of the new GeneratedClass (that is, we create a new Activation), and we compare the number and type of parameters. If these are compatible, we copy the parameters from the old to the new Activation. If they are not compatible, we throw an exception telling the user that the Activation is out of date, and they need to get a new one.

Field Summary
(package private)  org.apache.derby.impl.sql.execute.BaseActivation ac
           
(package private)  org.apache.derby.iapi.services.loader.GeneratedClass gc
           
private  org.apache.derby.iapi.sql.conn.LanguageConnectionContext lcc
           
(package private)  org.apache.derby.iapi.types.DataTypeDescriptor[] paramTypes
           
(package private)  org.apache.derby.iapi.sql.execute.ExecPreparedStatement ps
           
 
Constructor Summary
(package private) GenericActivationHolder(org.apache.derby.iapi.sql.conn.LanguageConnectionContext lcc, org.apache.derby.iapi.services.loader.GeneratedClass gc, org.apache.derby.iapi.sql.execute.ExecPreparedStatement ps, boolean scrollable)
          Constructor for an ActivationHolder
 
Method Summary
 void addWarning(java.sql.SQLWarning w)
          Add a warning to the activation
 boolean checkIfThisActivationHasHoldCursor(java.lang.String tableName)
          Temporary tables can be declared with ON COMMIT DELETE ROWS.
 void checkStatementValidity()
          Check the validity of the current executing statement.
 void clearCurrentRow(int resultSetNumber)
          Generated plans have a current row field for ease in defining the methods and finding them dynamically.
 void clearHeapConglomerateController()
          Clear the ConglomerateController to be used for an update or delete.
 void clearIndexScanInfo()
          Clear the info for the index to be re-used for update/delete.
 void clearParentResultSets()
           
 void clearResultSet()
          Sets the ResultSet to be returned by getResultSet() to null.
 void clearWarnings()
          Clear the activation's warnings.
 void close()
          Closing an activation statement marks it as unusable.
 org.apache.derby.iapi.sql.ResultSet execute()
          When the prepared statement is executed, it passes execution on to the activation execution was requested for.
 int[] getAutoGeneratedKeysColumnIndexes()
          Returns the column positions array of columns requested in auto-generated keys resultset for this avtivation.
 java.lang.String[] getAutoGeneratedKeysColumnNames()
          Returns the column names array of columns requested in auto-generated keys resultset for this avtivation.
 boolean getAutoGeneratedKeysResultsetMode()
          Returns true if auto-generated keys resultset request was made for this avtivation.
 org.apache.derby.iapi.sql.execute.ConstantAction getConstantAction()
           
 java.lang.String getCursorName()
          Return the cursor name of this activation.
 org.apache.derby.iapi.types.DataValueFactory getDataValueFactory()
          Get the DataValueFactory
 org.apache.derby.iapi.sql.dictionary.TableDescriptor getDDLTableDescriptor()
          Get the TableDescriptor for the target of DDL.
 java.sql.ResultSet[][] getDynamicResults()
          Return the set of dynamical created result sets, for procedures.
 org.apache.derby.iapi.sql.execute.ExecutionFactory getExecutionFactory()
          Get the ExecutionFactory
 boolean getForCreateTable()
          Get whether or not this activation is for create table.
 org.apache.derby.iapi.sql.execute.CursorResultSet getForUpdateIndexScan()
           
 org.apache.derby.iapi.store.access.ConglomerateController getHeapConglomerateController()
          Get the ConglomerateController, if any, that has already been opened for the heap when scaning for an update or delete.
 long getIndexConglomerateNumber()
          Get the conglomerate number of the index, if any, that has already been opened for scaning for an update or delete.
 org.apache.derby.iapi.store.access.ScanController getIndexScanController()
          Get the ScanController, if any, that has already been opened for the index when scaning for an update or delete.
 org.apache.derby.iapi.sql.conn.LanguageConnectionContext getLanguageConnectionContext()
          Get the language connection context associated with this activation
 int getMaxDynamicResults()
          Return the maximum number of dynamical created result sets from the procedure definition.
 int getMaxRows()
          Get the maximum # of rows.
 int getNumSubqueries()
          Get the number of subqueries in the entire query.
 org.apache.derby.iapi.sql.ParameterValueSet getParameterValueSet()
          Gets the ParameterValueSet for this execution of the statement.
 java.util.Vector getParentResultSet(java.lang.String resultSetId)
          get the reference to parent table ResultSets, that will be needed by the referential action dependent table scans.
 java.util.Hashtable getParentResultSets()
           
 org.apache.derby.iapi.sql.execute.ExecPreparedStatement getPreparedStatement()
          Get the prepared statement that this activation is for.
 org.apache.derby.iapi.sql.ResultDescription getResultDescription()
          Get the result description for this activation, if it has one.
 org.apache.derby.iapi.sql.ResultSet getResultSet()
          Returns the current result set for this activation, i.e.
 boolean getResultSetHoldability()
          Return the holdability of this activation.
 org.apache.derby.iapi.types.RowLocation getRowLocationTemplate(int itemNumber)
          Get the saved RowLocation.
 java.sql.ResultSet getTargetVTI()
          Get the ResultSet for the target of an update/delete to a VTI.
 org.apache.derby.iapi.store.access.TransactionController getTransactionController()
          Get the Execution TransactionController associated with this activation/lcc.
 java.sql.SQLWarning getWarnings()
          Returns the chained list of warnings.
 void informOfRowCount(org.apache.derby.iapi.sql.execute.NoPutResultSet resultSet, long rowCount)
          Tell this activation that the given ResultSet was found to have the given number of rows.
 boolean isClosed()
          Find out if the activation is closed or not.
 boolean isCursorActivation()
          Is this Activation for a cursor?
 boolean isInUse()
          Is the activation in use?
 boolean isSingleExecution()
          Is the activation set up for a single execution.
 void markUnused()
          Mark the activation as unused.
 void reset()
          Resets the activation to the "pre-execution" state - that is, the state where it can be used to begin a new execution.
 void setAutoGeneratedKeysResultsetInfo(int[] columnIndexes, java.lang.String[] columnNames)
          Set the auto-generated keys resultset mode to true for this activation.
 void setCurrentRow(org.apache.derby.iapi.sql.execute.ExecRow currentRow, int resultSetNumber)
          Generated plans have a current row field for ease in defining the methods and finding them dynamically.
 void setCursorName(java.lang.String cursorName)
          JDBC requires that all select statements be converted into cursors, and that the cursor name be settable for each execution of a select statement.
 void setDDLTableDescriptor(org.apache.derby.iapi.sql.dictionary.TableDescriptor td)
          Save the TableDescriptor for the target of DDL so that it can be passed between the various ConstantActions during execution.
 void setForCreateTable()
          Mark the Activation as being for create table.
 void setForUpdateIndexScan(org.apache.derby.iapi.sql.execute.CursorResultSet forUpdateResultSet)
          beetle 3865: updateable cursor using index.
 void setHeapConglomerateController(org.apache.derby.iapi.store.access.ConglomerateController updateHeapCC)
          Set the ConglomerateController to be used for an update or delete.
 void setIndexConglomerateNumber(long indexConglomerateNumber)
          Set the conglomerate number of the index to be used for an update or delete, when scanning an index that will also be updated (Saves opening the ScanController twice.)
 void setIndexScanController(org.apache.derby.iapi.store.access.ScanController indexSC)
          Set the ScanController to be used for an update or delete, when scanning an index that will also be updated (Saves opening the ScanController twice.)
 void setMaxRows(int maxRows)
          Set the maximum # of rows.
 void setParameters(org.apache.derby.iapi.sql.ParameterValueSet parameterValues, org.apache.derby.iapi.types.DataTypeDescriptor[] parameterTypes)
          Sets the parameter values for this execution of the statement.
 void setParentResultSet(org.apache.derby.iapi.sql.execute.TemporaryRowHolder rs, java.lang.String resultSetId)
           
 void setResultSetHoldability(boolean resultSetHoldability)
          Set current resultset holdability.
 void setSingleExecution()
          Set the activation for a single execution.
 void setTargetVTI(java.sql.ResultSet targetVTI)
          Save the ResultSet for the target of an update/delete to a VTI.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

ac

org.apache.derby.impl.sql.execute.BaseActivation ac

ps

org.apache.derby.iapi.sql.execute.ExecPreparedStatement ps

gc

org.apache.derby.iapi.services.loader.GeneratedClass gc

paramTypes

org.apache.derby.iapi.types.DataTypeDescriptor[] paramTypes

lcc

private final org.apache.derby.iapi.sql.conn.LanguageConnectionContext lcc
Constructor Detail

GenericActivationHolder

GenericActivationHolder(org.apache.derby.iapi.sql.conn.LanguageConnectionContext lcc,
                        org.apache.derby.iapi.services.loader.GeneratedClass gc,
                        org.apache.derby.iapi.sql.execute.ExecPreparedStatement ps,
                        boolean scrollable)
                  throws org.apache.derby.iapi.error.StandardException
Constructor for an ActivationHolder

Method Detail

reset

public void reset()
           throws org.apache.derby.iapi.error.StandardException
Description copied from interface: org.apache.derby.iapi.sql.Activation
Resets the activation to the "pre-execution" state - that is, the state where it can be used to begin a new execution. Frees local buffers, stops scans, resets counters to zero, sets current date and time to an unitialized state, etc.

Specified by:
reset in interface org.apache.derby.iapi.sql.Activation

checkIfThisActivationHasHoldCursor

public boolean checkIfThisActivationHasHoldCursor(java.lang.String tableName)
Temporary tables can be declared with ON COMMIT DELETE ROWS. But if the table has a held curosr open at commit time, data should not be deleted from the table. This method, (gets called at commit time) checks if this activation held cursor and if so, does that cursor reference the passed temp table name.

Specified by:
checkIfThisActivationHasHoldCursor in interface org.apache.derby.iapi.sql.Activation

setCursorName

public void setCursorName(java.lang.String cursorName)
Description copied from interface: org.apache.derby.iapi.sql.Activation
JDBC requires that all select statements be converted into cursors, and that the cursor name be settable for each execution of a select statement. The Language Module will support this, so that the JDBC driver will not have to parse JSQL text. This method will have no effect when called on non-select statements.

There will be a JSQL statement to disable the "cursorization" of all select statements. For non-cursorized select statements, this method will have no effect.

This has no effect if the activation has been closed.

Specified by:
setCursorName in interface org.apache.derby.iapi.sql.Activation

getCursorName

public java.lang.String getCursorName()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Return the cursor name of this activation. This will differ from its ResultSet's cursor name if it has been altered with setCursorName. Thus this always returns the cursor name of the next execution of this activation. The cursor name of the current execution must be obtained from the ResultSet. or this.getResultSet.getCursorName() [with null checking].

Statements that do not support cursors will return a null.

Specified by:
getCursorName in interface org.apache.derby.iapi.sql.Activation

setResultSetHoldability

public void setResultSetHoldability(boolean resultSetHoldability)
Description copied from interface: org.apache.derby.iapi.sql.Activation
Set current resultset holdability.

Specified by:
setResultSetHoldability in interface org.apache.derby.iapi.sql.Activation

getResultSetHoldability

public boolean getResultSetHoldability()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Return the holdability of this activation.

Specified by:
getResultSetHoldability in interface org.apache.derby.iapi.sql.Activation

setAutoGeneratedKeysResultsetInfo

public void setAutoGeneratedKeysResultsetInfo(int[] columnIndexes,
                                              java.lang.String[] columnNames)
Description copied from interface: org.apache.derby.iapi.sql.Activation
Set the auto-generated keys resultset mode to true for this activation. The specific columns for auto-generated keys resultset can be requested by passing column positions array The specific columns for auto-generated keys resultset can be requested by passing column names array Both the parameters would be null if user didn't request specific keys. Otherwise, the user could request specific columns by passing column positions or names array but not both.

Specified by:
setAutoGeneratedKeysResultsetInfo in interface org.apache.derby.iapi.sql.Activation

getAutoGeneratedKeysResultsetMode

public boolean getAutoGeneratedKeysResultsetMode()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Returns true if auto-generated keys resultset request was made for this avtivation.

Specified by:
getAutoGeneratedKeysResultsetMode in interface org.apache.derby.iapi.sql.Activation

getAutoGeneratedKeysColumnIndexes

public int[] getAutoGeneratedKeysColumnIndexes()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Returns the column positions array of columns requested in auto-generated keys resultset for this avtivation. Returns null if no specific column requested by positions

Specified by:
getAutoGeneratedKeysColumnIndexes in interface org.apache.derby.iapi.sql.Activation

getAutoGeneratedKeysColumnNames

public java.lang.String[] getAutoGeneratedKeysColumnNames()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Returns the column names array of columns requested in auto-generated keys resultset for this avtivation. Returns null if no specific column requested by names

Specified by:
getAutoGeneratedKeysColumnNames in interface org.apache.derby.iapi.sql.Activation

getLanguageConnectionContext

public org.apache.derby.iapi.sql.conn.LanguageConnectionContext getLanguageConnectionContext()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the language connection context associated with this activation

Specified by:
getLanguageConnectionContext in interface org.apache.derby.iapi.sql.Activation

getTransactionController

public org.apache.derby.iapi.store.access.TransactionController getTransactionController()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the Execution TransactionController associated with this activation/lcc.

Specified by:
getTransactionController in interface org.apache.derby.iapi.sql.Activation

getExecutionFactory

public org.apache.derby.iapi.sql.execute.ExecutionFactory getExecutionFactory()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the ExecutionFactory

Specified by:
getExecutionFactory in interface org.apache.derby.iapi.sql.Activation

getParameterValueSet

public org.apache.derby.iapi.sql.ParameterValueSet getParameterValueSet()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Gets the ParameterValueSet for this execution of the statement.

Specified by:
getParameterValueSet in interface org.apache.derby.iapi.sql.Activation

setParameters

public void setParameters(org.apache.derby.iapi.sql.ParameterValueSet parameterValues,
                          org.apache.derby.iapi.types.DataTypeDescriptor[] parameterTypes)
                   throws org.apache.derby.iapi.error.StandardException
Description copied from interface: org.apache.derby.iapi.sql.Activation
Sets the parameter values for this execution of the statement.

Has no effect if the activation has been closed.

NOTE: The setParameters() method is currently unimplemented. A statement with parameters will generate its own ParameterValueSet, which can be gotten with the getParameterValueSet() method (above). The idea behind setParameters() is to improve performance when operating across a network by allowing all the parameters to be set in one call, as opposed to one call per parameter.

Specified by:
setParameters in interface org.apache.derby.iapi.sql.Activation

execute

public org.apache.derby.iapi.sql.ResultSet execute()
                                            throws org.apache.derby.iapi.error.StandardException
Description copied from interface: org.apache.derby.iapi.sql.Activation
When the prepared statement is executed, it passes execution on to the activation execution was requested for.

Specified by:
execute in interface org.apache.derby.iapi.sql.Activation

getResultSet

public org.apache.derby.iapi.sql.ResultSet getResultSet()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Returns the current result set for this activation, i.e. the one returned by the last execute() call. If there has been no execute call or the activation has been reset or closed, a null is returned.

Specified by:
getResultSet in interface org.apache.derby.iapi.sql.Activation

clearResultSet

public void clearResultSet()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Sets the ResultSet to be returned by getResultSet() to null.

Specified by:
clearResultSet in interface org.apache.derby.iapi.sql.Activation

setCurrentRow

public void setCurrentRow(org.apache.derby.iapi.sql.execute.ExecRow currentRow,
                          int resultSetNumber)
Description copied from interface: org.apache.derby.iapi.sql.Activation
Generated plans have a current row field for ease in defining the methods and finding them dynamically. The interface is used to set the row before a dynamic method that uses it is invoked.

When all processing on the currentRow has been completed, callers should call activation.clearCurrentRow(resultSetNumber) to ensure that no unnecessary references are retained to rows. This will allow the rows no longer in use to be collected by the garbage collecter.

Specified by:
setCurrentRow in interface org.apache.derby.iapi.sql.Activation

clearCurrentRow

public void clearCurrentRow(int resultSetNumber)
Description copied from interface: org.apache.derby.iapi.sql.Activation
Generated plans have a current row field for ease in defining the methods and finding them dynamically. The interface is used to set the row before a dynamic method that uses it is invoked.

When all processing on the currentRow has been completed, callers should call activation.clearCurrentRow(resultSetNumber) to ensure that no unnecessary references are retained to rows. This will allow the rows no longer in use to be collected by the garbage collecter.

Specified by:
clearCurrentRow in interface org.apache.derby.iapi.sql.Activation

getPreparedStatement

public org.apache.derby.iapi.sql.execute.ExecPreparedStatement getPreparedStatement()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the prepared statement that this activation is for.

Specified by:
getPreparedStatement in interface org.apache.derby.iapi.sql.Activation

checkStatementValidity

public void checkStatementValidity()
                            throws org.apache.derby.iapi.error.StandardException
Description copied from interface: org.apache.derby.iapi.sql.Activation
Check the validity of the current executing statement. Needs to be called after a statement has obtained the relevant table locks on the

Specified by:
checkStatementValidity in interface org.apache.derby.iapi.sql.Activation

getResultDescription

public org.apache.derby.iapi.sql.ResultDescription getResultDescription()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the result description for this activation, if it has one.

Specified by:
getResultDescription in interface org.apache.derby.iapi.sql.Activation

getDataValueFactory

public org.apache.derby.iapi.types.DataValueFactory getDataValueFactory()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the DataValueFactory

Specified by:
getDataValueFactory in interface org.apache.derby.iapi.sql.Activation

getRowLocationTemplate

public org.apache.derby.iapi.types.RowLocation getRowLocationTemplate(int itemNumber)
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the saved RowLocation.

Specified by:
getRowLocationTemplate in interface org.apache.derby.iapi.sql.Activation

getHeapConglomerateController

public org.apache.derby.iapi.store.access.ConglomerateController getHeapConglomerateController()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the ConglomerateController, if any, that has already been opened for the heap when scaning for an update or delete. (Saves opening the ConglomerateController twice.)

Specified by:
getHeapConglomerateController in interface org.apache.derby.iapi.sql.Activation

setHeapConglomerateController

public void setHeapConglomerateController(org.apache.derby.iapi.store.access.ConglomerateController updateHeapCC)
Description copied from interface: org.apache.derby.iapi.sql.Activation
Set the ConglomerateController to be used for an update or delete. (Saves opening the ConglomerateController twice.)

Specified by:
setHeapConglomerateController in interface org.apache.derby.iapi.sql.Activation

clearHeapConglomerateController

public void clearHeapConglomerateController()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Clear the ConglomerateController to be used for an update or delete. (Saves opening the ConglomerateController twice.)

Specified by:
clearHeapConglomerateController in interface org.apache.derby.iapi.sql.Activation

getIndexScanController

public org.apache.derby.iapi.store.access.ScanController getIndexScanController()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the ScanController, if any, that has already been opened for the index when scaning for an update or delete. (Saves opening the ScanController twice.)

Specified by:
getIndexScanController in interface org.apache.derby.iapi.sql.Activation

setIndexScanController

public void setIndexScanController(org.apache.derby.iapi.store.access.ScanController indexSC)
Description copied from interface: org.apache.derby.iapi.sql.Activation
Set the ScanController to be used for an update or delete, when scanning an index that will also be updated (Saves opening the ScanController twice.)

Specified by:
setIndexScanController in interface org.apache.derby.iapi.sql.Activation

getIndexConglomerateNumber

public long getIndexConglomerateNumber()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the conglomerate number of the index, if any, that has already been opened for scaning for an update or delete. (Saves opening the ScanController twice.)

Specified by:
getIndexConglomerateNumber in interface org.apache.derby.iapi.sql.Activation

setIndexConglomerateNumber

public void setIndexConglomerateNumber(long indexConglomerateNumber)
Description copied from interface: org.apache.derby.iapi.sql.Activation
Set the conglomerate number of the index to be used for an update or delete, when scanning an index that will also be updated (Saves opening the ScanController twice.)

Specified by:
setIndexConglomerateNumber in interface org.apache.derby.iapi.sql.Activation

clearIndexScanInfo

public void clearIndexScanInfo()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Clear the info for the index to be re-used for update/delete. (ScanController and conglomerate number.)

Specified by:
clearIndexScanInfo in interface org.apache.derby.iapi.sql.Activation

close

public void close()
           throws org.apache.derby.iapi.error.StandardException
Description copied from interface: org.apache.derby.iapi.sql.Activation
Closing an activation statement marks it as unusable. Any other requests made on it will fail. An activation should be marked closed when it is expected to not be used any longer, i.e. when the connection for it is closed, or it has suffered some sort of severe error. This will also close its result set and release any resources it holds e.g. for parameters.

Any class that implements this must be prepared to be executed from garbage collection, ie. there is no matching context stack.

Specified by:
close in interface org.apache.derby.iapi.sql.Activation

isClosed

public boolean isClosed()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Find out if the activation is closed or not.

Specified by:
isClosed in interface org.apache.derby.iapi.sql.Activation

setSingleExecution

public void setSingleExecution()
Set the activation for a single execution.

Specified by:
setSingleExecution in interface org.apache.derby.iapi.sql.Activation

isSingleExecution

public boolean isSingleExecution()
Is the activation set up for a single execution.

Specified by:
isSingleExecution in interface org.apache.derby.iapi.sql.Activation

getNumSubqueries

public int getNumSubqueries()
Get the number of subqueries in the entire query.

Specified by:
getNumSubqueries in interface org.apache.derby.iapi.sql.Activation

setForCreateTable

public void setForCreateTable()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Mark the Activation as being for create table. (NOTE: We can do certain optimizations for create table that we can't do for other DDL.)

Specified by:
setForCreateTable in interface org.apache.derby.iapi.sql.Activation

getForCreateTable

public boolean getForCreateTable()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get whether or not this activation is for create table. (NOTE: We can do certain optimizations for create table that we can't do for other DDL.)

Specified by:
getForCreateTable in interface org.apache.derby.iapi.sql.Activation

setDDLTableDescriptor

public void setDDLTableDescriptor(org.apache.derby.iapi.sql.dictionary.TableDescriptor td)
Description copied from interface: org.apache.derby.iapi.sql.Activation
Save the TableDescriptor for the target of DDL so that it can be passed between the various ConstantActions during execution.

Specified by:
setDDLTableDescriptor in interface org.apache.derby.iapi.sql.Activation

getDDLTableDescriptor

public org.apache.derby.iapi.sql.dictionary.TableDescriptor getDDLTableDescriptor()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the TableDescriptor for the target of DDL.

Specified by:
getDDLTableDescriptor in interface org.apache.derby.iapi.sql.Activation

setMaxRows

public void setMaxRows(int maxRows)
Description copied from interface: org.apache.derby.iapi.sql.Activation
Set the maximum # of rows. (# of rows that can be returned by a ResultSet. 0 means no limit.)

Specified by:
setMaxRows in interface org.apache.derby.iapi.sql.Activation

getMaxRows

public int getMaxRows()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the maximum # of rows. (# of rows that can be returned by a ResultSet. 0 means no limit.)

Specified by:
getMaxRows in interface org.apache.derby.iapi.sql.Activation

setTargetVTI

public void setTargetVTI(java.sql.ResultSet targetVTI)
Description copied from interface: org.apache.derby.iapi.sql.Activation
Save the ResultSet for the target of an update/delete to a VTI.

Specified by:
setTargetVTI in interface org.apache.derby.iapi.sql.Activation

getTargetVTI

public java.sql.ResultSet getTargetVTI()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Get the ResultSet for the target of an update/delete to a VTI.

Specified by:
getTargetVTI in interface org.apache.derby.iapi.sql.Activation

markUnused

public void markUnused()
Mark the activation as unused.

Specified by:
markUnused in interface org.apache.derby.iapi.sql.Activation

isInUse

public boolean isInUse()
Is the activation in use?

Specified by:
isInUse in interface org.apache.derby.iapi.sql.Activation

addWarning

public void addWarning(java.sql.SQLWarning w)
Description copied from interface: org.apache.derby.iapi.sql.Activation
Add a warning to the activation

Specified by:
addWarning in interface org.apache.derby.iapi.sql.Activation

getWarnings

public java.sql.SQLWarning getWarnings()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Returns the chained list of warnings. Returns null if there are no warnings.

Specified by:
getWarnings in interface org.apache.derby.iapi.sql.Activation

clearWarnings

public void clearWarnings()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Clear the activation's warnings.

Specified by:
clearWarnings in interface org.apache.derby.iapi.sql.Activation

informOfRowCount

public void informOfRowCount(org.apache.derby.iapi.sql.execute.NoPutResultSet resultSet,
                             long rowCount)
                      throws org.apache.derby.iapi.error.StandardException
Description copied from interface: org.apache.derby.iapi.sql.Activation
Tell this activation that the given ResultSet was found to have the given number of rows. This is used during execution to determine whether a table has grown or shrunk. If a table's size changes significantly, the activation may invalidate its PreparedStatement to force recompilation. Note that the association of row counts with ResultSets is kept in the activation class, not in the activation itself. This means that this method must be synchronized. This method is not required to check the number of rows on each call. Because of synchronization, this check is likely to be expensive, so it may only check every hundred calls or so.

Specified by:
informOfRowCount in interface org.apache.derby.iapi.sql.Activation

isCursorActivation

public boolean isCursorActivation()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Is this Activation for a cursor?

Specified by:
isCursorActivation in interface org.apache.derby.iapi.sql.Activation

getConstantAction

public org.apache.derby.iapi.sql.execute.ConstantAction getConstantAction()
Specified by:
getConstantAction in interface org.apache.derby.iapi.sql.Activation

setParentResultSet

public void setParentResultSet(org.apache.derby.iapi.sql.execute.TemporaryRowHolder rs,
                               java.lang.String resultSetId)
Specified by:
setParentResultSet in interface org.apache.derby.iapi.sql.Activation

getParentResultSet

public java.util.Vector getParentResultSet(java.lang.String resultSetId)
Description copied from interface: org.apache.derby.iapi.sql.Activation
get the reference to parent table ResultSets, that will be needed by the referential action dependent table scans.

Specified by:
getParentResultSet in interface org.apache.derby.iapi.sql.Activation

clearParentResultSets

public void clearParentResultSets()
Specified by:
clearParentResultSets in interface org.apache.derby.iapi.sql.Activation

getParentResultSets

public java.util.Hashtable getParentResultSets()
Specified by:
getParentResultSets in interface org.apache.derby.iapi.sql.Activation

setForUpdateIndexScan

public void setForUpdateIndexScan(org.apache.derby.iapi.sql.execute.CursorResultSet forUpdateResultSet)
Description copied from interface: org.apache.derby.iapi.sql.Activation
beetle 3865: updateable cursor using index. A way of communication between cursor activation and update activation.

Specified by:
setForUpdateIndexScan in interface org.apache.derby.iapi.sql.Activation

getForUpdateIndexScan

public org.apache.derby.iapi.sql.execute.CursorResultSet getForUpdateIndexScan()
Specified by:
getForUpdateIndexScan in interface org.apache.derby.iapi.sql.Activation

getDynamicResults

public java.sql.ResultSet[][] getDynamicResults()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Return the set of dynamical created result sets, for procedures. Base implementation returns null, a generated class for a procedure overwrites this with a real implementation.

Specified by:
getDynamicResults in interface org.apache.derby.iapi.sql.Activation

getMaxDynamicResults

public int getMaxDynamicResults()
Description copied from interface: org.apache.derby.iapi.sql.Activation
Return the maximum number of dynamical created result sets from the procedure definition. Base implementation returns 0, a generated class for a procedure overwrites this with a real implementation.

Specified by:
getMaxDynamicResults in interface org.apache.derby.iapi.sql.Activation
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