net.sf.farrago.namespace.impl
Class MedAbstractColumnSet

java.lang.Object
  org.eigenbase.relopt.RelOptAbstractTable
      net.sf.farrago.namespace.impl.MedAbstractColumnSet

All Implemented Interfaces:

FarragoMedColumnSet, FarragoQueryColumnSet, RelOptTable, SqlValidatorTable

Direct Known Subclasses:

FlatFileColumnSet, FtrsTable, LcsTable, MedJdbcColumnSet, MedMdrClassExtent, MedMockColumnSet, MedMqlColumnSet

public abstract class MedAbstractColumnSet
extends RelOptAbstractTable
implements FarragoQueryColumnSet

MedAbstractColumnSet is an abstract base class for implementations of the FarragoMedColumnSet interface.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/namespace/impl/MedAbstractColumnSet.java#28 $

Author:

John V. Sichi

Field Summary

private SqlAccessType	allowedAccess
private Map<String,Properties>	columnPropMap
private CwmNamedColumnSet	cwmColumnSet
private String[]	foreignName
private String[]	localName
private FarragoPreparingStmt	preparingStmt
private Properties	tableProps

Fields inherited from class org.eigenbase.relopt.RelOptAbstractTable

name, rowType, schema

Constructor Summary

protected

MedAbstractColumnSet(String[] localName, String[] foreignName, RelDataType rowType, Properties tableProps, Map<String,Properties> columnPropMap) Creates a new MedAbstractColumnSet.

Method Summary

SqlAccessType	getAllowedAccess() Returns the access type of the table
Map<String,Properties>	getColumnPropertyMap()
CwmNamedColumnSet	getCwmColumnSet()
String[]	getForeignName()
String[]	getLocalName()
SqlMonotonicity	getMonotonicity(String columnName) Returns whether a given column is monotonic.
FarragoPreparingStmt	getPreparingStmt()
String[]	getQualifiedName() Obtains an identifier for this table.
Properties	getTableProperties()
void	setAllowedAccess(SqlAccessType allowedAccess)
void	setCwmColumnSet(CwmNamedColumnSet cwmColumnSet) Sets the CwmNamedColumnSet corresponding to this column set.
void	setPreparingStmt(FarragoPreparingStmt stmt) Sets the FarragoPreparingStmt acting on this column set.
protected RelNode	toLenientRel(RelOptCluster cluster, RelNode child, RelDataType targetRowType, RelDataType srcRowType) Converts one RelNode to another RelNode with specified RowType.
protected RelNode	toUdxRel(RelOptCluster cluster, RelOptConnection connection, String udxSpecificName, String serverMofId, RexNode[] args) Provides an implementation of the toRel interface method in terms of an underlying UDX.

Methods inherited from class org.eigenbase.relopt.RelOptAbstractTable

getCollationList, getName, getRelOptSchema, getRowCount, getRowType, setRowType

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eigenbase.relopt.RelOptTable

getCollationList, getRelOptSchema, getRowCount, getRowType, toRel

Methods inherited from interface org.eigenbase.sql.validate.SqlValidatorTable

getRowType

Field Detail

localName

private final String[] localName

foreignName

private final String[] foreignName

tableProps

private Properties tableProps

columnPropMap

private Map<String,Properties> columnPropMap

preparingStmt

private FarragoPreparingStmt preparingStmt

cwmColumnSet

private CwmNamedColumnSet cwmColumnSet

allowedAccess

private SqlAccessType allowedAccess

Constructor Detail

MedAbstractColumnSet

protected MedAbstractColumnSet(String[] localName,
                               String[] foreignName,
                               RelDataType rowType,
                               Properties tableProps,
                               Map<String,Properties> columnPropMap)

Creates a new MedAbstractColumnSet.

Parameters:

localName - name of this ColumnSet as it will be known within the Farrago system

foreignName - name of this ColumnSet as it is known on the foreign server; may be null if no meaningful name exists

rowType - row type descriptor

tableProps - table-level properties

columnPropMap - column-level properties (map from column name to Properties object)

Method Detail

getQualifiedName

public String[] getQualifiedName()

Description copied from interface: RelOptTable

Obtains an identifier for this table. The identifier must be unique with respect to the Connection producing this table.

Specified by:

getQualifiedName in interface RelOptTable

Specified by:

getQualifiedName in interface SqlValidatorTable

Overrides:

getQualifiedName in class RelOptAbstractTable

Returns:

qualified name

getLocalName

public String[] getLocalName()

Returns:

the name this ColumnSet is known by within the Farrago system

getForeignName

public String[] getForeignName()

Returns:

the name of this ColumnSet as it is known on the foreign server

getTableProperties

public Properties getTableProperties()

Returns:

options specified by CREATE FOREIGN TABLE

getColumnPropertyMap

public Map<String,Properties> getColumnPropertyMap()

Returns:

map (from column name to Properties) of column options specified by CREATE FOREIGN TABLE

getPreparingStmt

public FarragoPreparingStmt getPreparingStmt()

Specified by:

getPreparingStmt in interface FarragoQueryColumnSet

Returns:

the FarragoPreparingStmt acting on this column set

setPreparingStmt

public void setPreparingStmt(FarragoPreparingStmt stmt)

Description copied from interface: FarragoQueryColumnSet

Sets the FarragoPreparingStmt acting on this column set.

Specified by:

setPreparingStmt in interface FarragoQueryColumnSet

Parameters:

stmt - the FarragoPreparingStmt to set

setCwmColumnSet

public void setCwmColumnSet(CwmNamedColumnSet cwmColumnSet)

Description copied from interface: FarragoQueryColumnSet

Sets the CwmNamedColumnSet corresponding to this column set.

Specified by:

setCwmColumnSet in interface FarragoQueryColumnSet

Parameters:

cwmColumnSet - the CwmNamedColumnSet, or null if this column set is not defined in the catalog

getCwmColumnSet

public CwmNamedColumnSet getCwmColumnSet()

Specified by:

getCwmColumnSet in interface FarragoQueryColumnSet

Returns:

the CwmNamedColumnSet corresponding to this column set

getMonotonicity

public SqlMonotonicity getMonotonicity(String columnName)

Description copied from interface: SqlValidatorTable

Returns whether a given column is monotonic.

Specified by:

getMonotonicity in interface SqlValidatorTable

getAllowedAccess

public SqlAccessType getAllowedAccess()

Description copied from interface: SqlValidatorTable

Returns the access type of the table

Specified by:

getAllowedAccess in interface SqlValidatorTable

setAllowedAccess

public void setAllowedAccess(SqlAccessType allowedAccess)

toUdxRel

protected RelNode toUdxRel(RelOptCluster cluster,
                           RelOptConnection connection,
                           String udxSpecificName,
                           String serverMofId,
                           RexNode[] args)

Provides an implementation of the toRel interface method in terms of an underlying UDX.

Parameters:

cluster - same as for toRel

connection - same as for toRel

udxSpecificName - specific name with which the UDX was created (either via the SPECIFIC keyword or the invocation name if SPECIFIC was not specified); this can be a qualified name, possibly with quoted identifiers, e.g. x.y.z or x."y".z

serverMofId - if not null, the invoked UDX can access the data server with the given MOFID at runtime via FarragoUdrRuntime.getDataServerRuntimeSupport(java.lang.Object)

args - arguments to UDX invocation

Returns:

generated relational expression producing the UDX results

toLenientRel

protected RelNode toLenientRel(RelOptCluster cluster,
                               RelNode child,
                               RelDataType targetRowType,
                               RelDataType srcRowType)

Converts one RelNode to another RelNode with specified RowType. New columns are filled with nulls.

Parameters:

cluster - same as for toRel

child - original RelNode

targetRowType - RowType to map to

srcRowType - RowType of external data source