de.julielab.jcore.reader.db

Class TableReaderConstants

java.lang.Object

de.julielab.jcore.reader.db.TableReaderConstants

public class TableReaderConstants
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static String	PARAM_BATCH_SIZE
static String	PARAM_COSTOSYS_CONFIG_NAME Constant denoting the name of the external dependency representing the configuration file for the DataBaseConnector. The name of the resource is assured by convention only as alternative names are not reject from the descriptor when entering them manually.
static String	PARAM_DB_DRIVER
static String	PARAM_LIMIT Integer parameter.
static String	PARAM_SELECTION_ORDER Boolean parameter.
static String	PARAM_TABLE String parameter.
static String	PARAM_WHERE_CONDITION String parameter.

Constructor Summary

Constructors

Constructor and Description
TableReaderConstants()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

PARAM_DB_DRIVER

public static final String PARAM_DB_DRIVER

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Constant Field Values

PARAM_BATCH_SIZE

public static final String PARAM_BATCH_SIZE

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Constant Field Values

PARAM_TABLE

public static final String PARAM_TABLE

String parameter. Determines the table from which rows are read and returned. Both subset and data tables are allowed. For data tables, an optional 'where' condition can be specified, restricting the rows to be returned. Note that only reading from subset tables works correctly for concurrent access of multiple readers (for data tables each reader will return the whole table).

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Constant Field Values

PARAM_SELECTION_ORDER

public static final String PARAM_SELECTION_ORDER

Boolean parameter. Determines whether to return random samples of unprocessed documents rather than proceeding sequentially. This parameter is defined for subset reading only.

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Constant Field Values

PARAM_WHERE_CONDITION

public static final String PARAM_WHERE_CONDITION

String parameter. Used only when reading directly from data tables. Only rows are returned which satisfy the specified 'where' clause. If empty or set to null, all rows are returned.

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Constant Field Values

PARAM_LIMIT

public static final String PARAM_LIMIT

Integer parameter. Determines the maximum amount of documents being read by this reader. The reader will also not mark more documents to be in process as specified with this parameter.

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Constant Field Values

PARAM_COSTOSYS_CONFIG_NAME

public static final String PARAM_COSTOSYS_CONFIG_NAME

Constant denoting the name of the external dependency representing the configuration file for the DataBaseConnector.
The name of the resource is assured by convention only as alternative names are not reject from the descriptor when entering them manually.

See Also:

Constant Field Values

Constructor Detail

TableReaderConstants

public TableReaderConstants()