de.julielab.jcore.reader.db

Class SubsetReaderConstants

java.lang.Object

de.julielab.jcore.reader.db.SubsetReaderConstants

public class SubsetReaderConstants
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static String	PARAM_ADDITIONAL_TABLE_SCHEMAS Multi-valued String parameter indicating different schemas in case tables will be joined.
static String	PARAM_ADDITIONAL_TABLES Multi-valued String parameter indicating which tables will be read from additionally to the referenced data table.
static String	PARAM_ADDITONAL_TABLES_STORAGE_PG_SCHEMA
static String	PARAM_DATA_TIMESTAMP String parameter representing a long value.
static String	PARAM_FETCH_IDS_PROACTIVELY Boolean parameter.
static String	PARAM_RESET_TABLE Boolean parameter.

Constructor Summary

Constructors

Constructor and Description
SubsetReaderConstants()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

PARAM_ADDITIONAL_TABLES

public static final String PARAM_ADDITIONAL_TABLES

Multi-valued String parameter indicating which tables will be read from additionally to the referenced data table. The tables will be joined to a single CAS.

See Also:

Constant Field Values

PARAM_ADDITIONAL_TABLE_SCHEMAS

public static final String PARAM_ADDITIONAL_TABLE_SCHEMAS

Multi-valued String parameter indicating different schemas in case tables will be joined. The schema for the referenced data table has to be the first element. The schema for the additional tables has to be the second element.

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Constant Field Values

PARAM_FETCH_IDS_PROACTIVELY

public static final String PARAM_FETCH_IDS_PROACTIVELY

Boolean parameter. Determines whether a background thread should be used which fetches the next batch of document IDs to process while the former batch is already being processed. Using the background thread boosts performance as waiting time is minimized. However, as the next batch of documents is marked in advance as being in process, this approach is only suitable when reading all available data.

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Constant Field Values

PARAM_RESET_TABLE

public static final String PARAM_RESET_TABLE

Boolean parameter. Indicates whether the read subset table is to be reset before reading.

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Constant Field Values

PARAM_DATA_TIMESTAMP

public static final String PARAM_DATA_TIMESTAMP

String parameter representing a long value. If not null, only documents with a dataTimestamp newer then the passed value will be processed.

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Constant Field Values

PARAM_ADDITONAL_TABLES_STORAGE_PG_SCHEMA

public static final String PARAM_ADDITONAL_TABLES_STORAGE_PG_SCHEMA

See Also:

Constant Field Values

Constructor Detail

SubsetReaderConstants

public SubsetReaderConstants()