net.sf.farrago.namespace.util
Class MedAbstractMetadataSink

java.lang.Object
  net.sf.farrago.namespace.util.MedAbstractMetadataSink

All Implemented Interfaces:

FarragoMedMetadataSink

Direct Known Subclasses:

DdlImportForeignSchemaStmt.ImportSink, FarragoMedUDR.BrowseSchemaSink

public abstract class MedAbstractMetadataSink
extends Object
implements FarragoMedMetadataSink

MedAbstractMetadataSink is an abstract base class for implementations of the FarragoMedMetadataSink interface.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/namespace/util/MedAbstractMetadataSink.java#8 $

Author:

John V. Sichi

Field Summary

private Map<String,Pattern>	patternMap
private FarragoMedMetadataQuery	query
private FarragoTypeFactory	typeFactory

Constructor Summary

protected

MedAbstractMetadataSink(FarragoMedMetadataQuery query, FarragoTypeFactory typeFactory) Creates a new sink.

Method Summary

(package private) Pattern	getPattern(String likePattern)
FarragoTypeFactory	getTypeFactory()
protected boolean	shouldInclude(String objectName, String typeName, boolean qualifier) Tests whether an object should be included in the query result.

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.farrago.namespace.FarragoMedMetadataSink

writeColumnDescriptor, writeObjectDescriptor

Field Detail

query

private final FarragoMedMetadataQuery query

typeFactory

private final FarragoTypeFactory typeFactory

patternMap

private final Map<String,Pattern> patternMap

Constructor Detail

MedAbstractMetadataSink

protected MedAbstractMetadataSink(FarragoMedMetadataQuery query,
                                  FarragoTypeFactory typeFactory)

Creates a new sink.

Parameters:

query - the query being processed; its filters will be implemented by this sink

typeFactory - factory for types written to this sink

Method Detail

shouldInclude

protected boolean shouldInclude(String objectName,
                                String typeName,
                                boolean qualifier)

Tests whether an object should be included in the query result.

Parameters:

objectName - name of object

typeName - name of object type

qualifier - if true, test whether object is a valid qualifier; if false, test whether object itself should be included

Returns:

true if the inclusion test passes

getTypeFactory

public FarragoTypeFactory getTypeFactory()

Specified by:

getTypeFactory in interface FarragoMedMetadataSink

Returns:

a type factory for use in creating type instances for calls such as FarragoMedMetadataSink.writeColumnDescriptor(java.lang.String, java.lang.String, int, org.eigenbase.reltype.RelDataType, java.lang.String, java.lang.String, java.util.Properties)

getPattern

Pattern getPattern(String likePattern)