org.teiid.translator.simpledb

Class SimpleDBMetadataProcessor

java.lang.Object

org.teiid.translator.simpledb.SimpleDBMetadataProcessor

All Implemented Interfaces:

MetadataProcessor<SimpleDBConnection>

public class SimpleDBMetadataProcessor
extends Object
implements MetadataProcessor<SimpleDBConnection>

Field Summary

Fields

Modifier and Type	Field and Description
static String	ITEM_NAME

Constructor Summary

Constructors

Constructor and Description
SimpleDBMetadataProcessor()

Method Summary

Methods

Modifier and Type	Method and Description
static String	getName(AbstractMetadataRecord record)
static boolean	isItemName(Column column)
static boolean	isItemName(String name)
void	process(MetadataFactory metadataFactory, SimpleDBConnection connection) As SimpleDB does not provide any way to obtain all attribute names for given domain (one can query only attribute names for single item) and querrying all items in domain to get complete set of attribute names would be very slow and resource consuming, this approach has been selected: For each domain only first item is queried for attribute names and metadata are created using this information.

Methods inherited from class java.lang.Object

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

Field Detail

ITEM_NAME

public static final String ITEM_NAME

See Also:

Constant Field Values

Constructor Detail

SimpleDBMetadataProcessor

public SimpleDBMetadataProcessor()

Method Detail

process

public void process(MetadataFactory metadataFactory,
           SimpleDBConnection connection)
             throws TranslatorException

As SimpleDB does not provide any way to obtain all attribute names for given domain (one can query only attribute names for single item) and querrying all items in domain to get complete set of attribute names would be very slow and resource consuming, this approach has been selected: For each domain only first item is queried for attribute names and metadata are created using this information. Thus first item in domain should have as much attributes as possible.

Specified by:

process in interface MetadataProcessor<SimpleDBConnection>

Throws:

TranslatorException

See Also:

MetadataProcessor.process(org.teiid.metadata.MetadataFactory, java.lang.Object)

getName

public static String getName(AbstractMetadataRecord record)

isItemName

public static boolean isItemName(Column column)

isItemName

public static boolean isItemName(String name)