Apache Derby Database Engine and Embedded JDBC Driver 10.17.1.0 · org.apache.derby.impl.sql.execute.MatchingClauseConstantAction

Field Summary

Modifier and Type	Field and Description
private String	_actionMethodName
private transient ResultSet	_actionRS
private int	_clauseType
private transient GeneratedMethod	_matchRefinementMethod
private String	_matchRefinementName
private String	_resultSetFieldName
private transient GeneratedMethod	_rowMakingMethod
private String	_rowMakingMethodName
private ConstantAction	_thenAction
private ResultDescription	_thenColumnSignature
private static final int	FIRST_VERSION
private static final long	serialVersionUID Serial version produced by the serialver utility.

Constructor Summary

Access	Constructor and Description
public	MatchingClauseConstantAction() 0-arg constructor needed by Formatable machinery
public	MatchingClauseConstantAction(int WHEN_NOT_MATCHED_THEN_INSERT, WHEN_MATCHED_THEN_UPDATE, WHEN_MATCHED_THEN_DELETE clauseType, String Name of the method which evaluates the boolean expression in the WHEN clause. matchRefinementName, ResultDescription The shape of the row which goes into the temporary table. thenColumnSignature, String Name of the method which populates the "then" row with expressions from the driving left join. rowMakingMethodName, String Name of the field which will be stuffed at runtime with the temporary table of relevant rows. resultSetFieldName, String Name of the method which invokes the INSERT/UPDATE/DELETE action. actionMethodName, ConstantAction The ConstantAction describing the associated INSERT/UPDATE/DELETE action. thenAction) Construct from thin air.

Access

Constructor and Description

public

MatchingClauseConstantAction()

0-arg constructor needed by Formatable machinery

public

MatchingClauseConstantAction(int

WHEN_NOT_MATCHED_THEN_INSERT, WHEN_MATCHED_THEN_UPDATE, WHEN_MATCHED_THEN_DELETE

clauseType, String

Name of the method which evaluates the boolean expression in the WHEN clause.

matchRefinementName, ResultDescription

The shape of the row which goes into the temporary table.

thenColumnSignature, String

Name of the method which populates the "then" row with expressions from the driving left join.

rowMakingMethodName, String

Name of the field which will be stuffed at runtime with the temporary table of relevant rows.

resultSetFieldName, String

Name of the method which invokes the INSERT/UPDATE/DELETE action.

actionMethodName, ConstantAction

The ConstantAction describing the associated INSERT/UPDATE/DELETE action.

thenAction)

Construct from thin air.

Method Summary

Modifier and Type	Method and Description
pack-priv TemporaryRowHolderImpl	bufferThenRow(Activation activation, TemporaryRowHolderImpl thenRows, ExecRow selectRow) Construct and buffer a row for the INSERT/UPDATE/DELETE action corresponding to this [ NOT ] MATCHED clause.
private ExecRow	bufferThenRow(Activation activation) Construct and buffer a row for the INSERT/UPDATE/DELETE action corresponding to this [ NOT ] MATCHED clause.
public int	clauseType() Get the clause type: WHEN_NOT_MATCHED_THEN_INSERT, WHEN_MATCHED_THEN_UPDATE, WHEN_MATCHED_THEN_DELETE
pack-priv void	cleanUp() Release resources at the end.
private TemporaryRowHolderImpl	createThenRows(Activation activation) Create the temporary table for holding the rows which are buffered up for bulk-processing after the driving left join completes.
pack-priv boolean	evaluateRefinementClause(Activation activation) Run the matching refinement clause associated with this WHEN [ NOT ] MATCHED clause.
public void	executeConstantAction(Activation The execution environment for this constant action. activation) Implements org.apache.derby.iapi.sql.execute.ConstantAction.executeConstantAction. Run the ConstantAction.
public void	executeConstantAction(Activation activation, TemporaryRowHolderImpl thenRows)
public int	Returns: the formatID of this class getTypeFormatId() Implements org.apache.derby.iapi.services.io.TypedFormat.getTypeFormatId. Get the formatID which corresponds to this class.
pack-priv void	init() Initialize this constant action, nulling out any transient state left over from a previous use.
public void	readExternal(ObjectInput read this. in) Implements java.io.Externalizable.readExternal. Read this object from a stream of stored objects.
public void	writeExternal(ObjectOutput write bytes here. out) Implements java.io.Externalizable.writeExternal. Write this object to a stream of stored objects.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

_actionMethodName	back to summary
private String _actionMethodName

_actionRS	back to summary
private transient ResultSet _actionRS

_clauseType	back to summary
private int _clauseType

_matchRefinementMethod	back to summary
private transient GeneratedMethod _matchRefinementMethod

_matchRefinementName	back to summary
private String _matchRefinementName

_resultSetFieldName	back to summary
private String _resultSetFieldName

_rowMakingMethod	back to summary
private transient GeneratedMethod _rowMakingMethod

_rowMakingMethodName	back to summary
private String _rowMakingMethodName

_thenAction	back to summary
private ConstantAction _thenAction

_thenColumnSignature	back to summary
private ResultDescription _thenColumnSignature

FIRST_VERSION	back to summary
private static final int FIRST_VERSION

serialVersionUID	back to summary
private static final long serialVersionUID Serial version produced by the serialver utility. Needed in order to make serialization work reliably across different compilers.

Constructor Detail

MatchingClauseConstantAction	back to summary
public MatchingClauseConstantAction() 0-arg constructor needed by Formatable machinery

MatchingClauseConstantAction	back to summary
public MatchingClauseConstantAction(int clauseType, String matchRefinementName, ResultDescription thenColumnSignature, String rowMakingMethodName, String resultSetFieldName, String actionMethodName, ConstantAction thenAction) Construct from thin air. Parameters clauseType:int WHEN_NOT_MATCHED_THEN_INSERT, WHEN_MATCHED_THEN_UPDATE, WHEN_MATCHED_THEN_DELETE matchRefinementName:String Name of the method which evaluates the boolean expression in the WHEN clause. thenColumnSignature:ResultDescription The shape of the row which goes into the temporary table. rowMakingMethodName:String Name of the method which populates the "then" row with expressions from the driving left join. resultSetFieldName:String Name of the field which will be stuffed at runtime with the temporary table of relevant rows. actionMethodName:String Name of the method which invokes the INSERT/UPDATE/DELETE action. thenAction:ConstantAction The ConstantAction describing the associated INSERT/UPDATE/DELETE action.

MatchingClauseConstantAction

back to summary

public MatchingClauseConstantAction(int clauseType, String matchRefinementName, ResultDescription thenColumnSignature, String rowMakingMethodName, String resultSetFieldName, String actionMethodName, ConstantAction thenAction)

Construct from thin air.

Parameters

clauseType:int: WHEN_NOT_MATCHED_THEN_INSERT, WHEN_MATCHED_THEN_UPDATE, WHEN_MATCHED_THEN_DELETE
matchRefinementName:String: Name of the method which evaluates the boolean expression in the WHEN clause.
thenColumnSignature:ResultDescription: The shape of the row which goes into the temporary table.
rowMakingMethodName:String: Name of the method which populates the "then" row with expressions from the driving left join.
resultSetFieldName:String: Name of the field which will be stuffed at runtime with the temporary table of relevant rows.
actionMethodName:String: Name of the method which invokes the INSERT/UPDATE/DELETE action.
thenAction:ConstantAction: The ConstantAction describing the associated INSERT/UPDATE/DELETE action.

Method Detail

bufferThenRow	back to summary
pack-priv TemporaryRowHolderImpl bufferThenRow(Activation activation, TemporaryRowHolderImpl thenRows, ExecRow selectRow) throws StandardException Construct and buffer a row for the INSERT/UPDATE/DELETE action corresponding to this [ NOT ] MATCHED clause. The buffered row is built from columns in the passed-in row. The passed-in row is the SELECT list of the MERGE statement's driving left join.

bufferThenRow

back to summary

pack-priv TemporaryRowHolderImpl bufferThenRow(Activation activation, TemporaryRowHolderImpl thenRows, ExecRow selectRow) throws StandardException

Construct and buffer a row for the INSERT/UPDATE/DELETE action corresponding to this [ NOT ] MATCHED clause. The buffered row is built from columns in the passed-in row. The passed-in row is the SELECT list of the MERGE statement's driving left join.

bufferThenRow	back to summary
private ExecRow bufferThenRow(Activation activation) throws StandardException Construct and buffer a row for the INSERT/UPDATE/DELETE action corresponding to this [ NOT ] MATCHED clause.

clauseType	back to summary
public int clauseType() Get the clause type: WHEN_NOT_MATCHED_THEN_INSERT, WHEN_MATCHED_THEN_UPDATE, WHEN_MATCHED_THEN_DELETE

cleanUp	back to summary
pack-priv void cleanUp() throws StandardException Release resources at the end.

createThenRows	back to summary
private TemporaryRowHolderImpl createThenRows(Activation activation) throws StandardException Create the temporary table for holding the rows which are buffered up for bulk-processing after the driving left join completes.

evaluateRefinementClause	back to summary
pack-priv boolean evaluateRefinementClause(Activation activation) throws StandardException Run the matching refinement clause associated with this WHEN [ NOT ] MATCHED clause. The refinement is a boolean expression. Return the boolean value it resolves to. A boolean NULL is treated as false. If there is no refinement clause, then this method evaluates to true.

executeConstantAction	back to summary
public void executeConstantAction(Activation activation) throws StandardException Implements org.apache.derby.iapi.sql.execute.ConstantAction.executeConstantAction. Doc from org.apache.derby.iapi.sql.execute.ConstantAction.executeConstantAction. Run the ConstantAction. Parameters activation:Activation The execution environment for this constant action. Exceptions StandardException: Thrown on failure

executeConstantAction

back to summary

public void executeConstantAction(Activation activation) throws StandardException

Implements org.apache.derby.iapi.sql.execute.ConstantAction.executeConstantAction.

Doc from org.apache.derby.iapi.sql.execute.ConstantAction.executeConstantAction.

Run the ConstantAction.

Parameters

activation:Activation: The execution environment for this constant action.

Exceptions

StandardException:: Thrown on failure

executeConstantAction	back to summary
public void executeConstantAction(Activation activation, TemporaryRowHolderImpl thenRows) throws StandardException

getTypeFormatId	back to summary
public int getTypeFormatId() Implements org.apache.derby.iapi.services.io.TypedFormat.getTypeFormatId. Get the formatID which corresponds to this class. Returns:int the formatID of this class

getTypeFormatId

back to summary

public int getTypeFormatId()

Implements org.apache.derby.iapi.services.io.TypedFormat.getTypeFormatId.

Get the formatID which corresponds to this class.

Returns:int: the formatID of this class

init	back to summary
pack-priv void init() throws StandardException Initialize this constant action, nulling out any transient state left over from a previous use.

readExternal	back to summary
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException Implements java.io.Externalizable.readExternal. Read this object from a stream of stored objects. Parameters in:ObjectInput read this. Exceptions IOException: thrown on error ClassNotFoundException: thrown on error

readExternal

back to summary

public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException

Implements java.io.Externalizable.readExternal.

Read this object from a stream of stored objects.

Parameters

in:ObjectInput: read this.

Exceptions

IOException:: thrown on error
ClassNotFoundException:: thrown on error

writeExternal	back to summary
public void writeExternal(ObjectOutput out) throws IOException Implements java.io.Externalizable.writeExternal. Write this object to a stream of stored objects. Parameters out:ObjectOutput write bytes here. Exceptions IOException: thrown on error

writeExternal

back to summary

public void writeExternal(ObjectOutput out) throws IOException

Implements java.io.Externalizable.writeExternal.

Write this object to a stream of stored objects.

Parameters

out:ObjectOutput: write bytes here.

Exceptions

IOException:: thrown on error

public Class MatchingClauseConstantAction

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail