net.sf.farrago.query
Class FarragoExecutableFennelStmt

java.lang.Object
  org.eigenbase.util.CompoundClosableAllocation
      net.sf.farrago.util.FarragoCompoundAllocation
          net.sf.farrago.query.FarragoExecutableStmtImpl
              net.sf.farrago.query.FarragoExecutableFennelStmt

All Implemented Interfaces:

FarragoSessionExecutableStmt, FarragoAllocation, FarragoAllocationOwner, ClosableAllocation, ClosableAllocationOwner

Direct Known Subclasses:

FarragoExecutableJavaStmt

 class FarragoExecutableFennelStmt
extends FarragoExecutableStmtImpl

FarragoExecutableFennelStmt implements FarragoSessionExecutableStmt by executing a pure Fennel statement that requires no compiled Java classes.

NOTE: be sure to read superclass warnings before modifying this class.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/query/FarragoExecutableFennelStmt.java#13 $

Author:

Zelaine Fong

Field Summary

private Map<String,String>	referencedObjectTimestampMap
private Map<String,RelDataType>	resultSetTypeMap
protected RelDataType	rowType
private String	streamName
protected String	xmiFennelPlan

Fields inherited from class net.sf.farrago.query.FarragoExecutableStmtImpl

tracer

Fields inherited from class org.eigenbase.util.CompoundClosableAllocation

allocations

Constructor Summary

FarragoExecutableFennelStmt(RelDataType preparedRowType, RelDataType dynamicParamRowType, String xmiFennelPlan, String streamName, boolean isDml, TableModificationRelBase.Operation tableModOp, Map<String,String> referencedObjectTimestampMap, TableAccessMap tableAccessMap, Map<String,RelDataType> typeMap)

Method Summary

ResultSet	execute(FarragoSessionRuntimeContext runtimeContext) Executes this statement.
long	getMemoryUsage()
Set<String>	getReferencedObjectIds()
String	getReferencedObjectModTime(String mofid)
Map<String,RelDataType>	getResultSetTypeMap() Map from result set name to row type.
RelDataType	getRowType()

Methods inherited from class net.sf.farrago.query.FarragoExecutableStmtImpl

getDynamicParamRowType, getIterCalcTypeMap, getTableAccessMap, getTableModOp, isDml

Methods inherited from class org.eigenbase.util.CompoundClosableAllocation

addAllocation, closeAllocation, forgetAllocation, hasAllocations

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.eigenbase.util.ClosableAllocationOwner

addAllocation

Methods inherited from interface org.eigenbase.util.ClosableAllocation

closeAllocation

Methods inherited from interface org.eigenbase.util.ClosableAllocation

closeAllocation

Field Detail

rowType

protected final RelDataType rowType

xmiFennelPlan

protected final String xmiFennelPlan

referencedObjectTimestampMap

private final Map<String,String> referencedObjectTimestampMap

streamName

private final String streamName

resultSetTypeMap

private final Map<String,RelDataType> resultSetTypeMap

Constructor Detail

FarragoExecutableFennelStmt

FarragoExecutableFennelStmt(RelDataType preparedRowType,
                            RelDataType dynamicParamRowType,
                            String xmiFennelPlan,
                            String streamName,
                            boolean isDml,
                            TableModificationRelBase.Operation tableModOp,
                            Map<String,String> referencedObjectTimestampMap,
                            TableAccessMap tableAccessMap,
                            Map<String,RelDataType> typeMap)

Method Detail

getRowType

public RelDataType getRowType()

Returns:

type descriptor for rows produced by this stmt

getReferencedObjectIds

public Set<String> getReferencedObjectIds()

Specified by:

getReferencedObjectIds in interface FarragoSessionExecutableStmt

Overrides:

getReferencedObjectIds in class FarragoExecutableStmtImpl

Returns:

Set of MOFID's of objects accessed when this stmt is executed

getReferencedObjectModTime

public String getReferencedObjectModTime(String mofid)

Specified by:

getReferencedObjectModTime in interface FarragoSessionExecutableStmt

Overrides:

getReferencedObjectModTime in class FarragoExecutableStmtImpl

Returns:

the modification time of an object accessed by this statement, or null if the modification time is not available

execute

public ResultSet execute(FarragoSessionRuntimeContext runtimeContext)

Description copied from interface: FarragoSessionExecutableStmt

Executes this statement.

Parameters:

runtimeContext - context in which to execute

Returns:

ResultSet produced by statement

getMemoryUsage

public long getMemoryUsage()

Returns:

approximate total number of bytes used by this statement's in-memory representation

getResultSetTypeMap

public Map<String,RelDataType> getResultSetTypeMap()

Description copied from interface: FarragoSessionExecutableStmt

Map from result set name to row type.

Specified by:

getResultSetTypeMap in interface FarragoSessionExecutableStmt

Overrides:

getResultSetTypeMap in class FarragoExecutableStmtImpl