org.eclipse.smila.importing.state.objectstore
Class StateStoreConfiguration

java.lang.Object
  org.eclipse.smila.importing.state.objectstore.StateStoreConfiguration

public class StateStoreConfiguration
extends java.lang.Object

configuration for ObjectStoreStateService. Main purpose is creation of configurable entry key so that it's possible to optimize the StateService for varying numbers of entries and to adapt it to underlying objectstore implementations.

Field Summary

static java.lang.String	KEY_KEYPATTERN property name to the {@link String#format(String, Object...) pattern that combines shard part and segmented rest of digest into an entry key.
static java.lang.String	KEY_SEGMENTCOUNT property name to configure the count of the segments in the remaining part of the entry key.
static java.lang.String	KEY_SEGMENTLENGTH property name to configure the length of the segments in the remaining part of the entry key.
static java.lang.String	KEY_SHARDLENGTH property name to configure the length of the "shard" part of the entry key.

Constructor Summary

StateStoreConfiguration(java.util.Properties properties)
create configuration from properties.

Method Summary

java.lang.String	getEntryKey(java.lang.String idDigest) compute entry key from id digest according to configuration properties.
java.lang.String	getEntryKey(java.lang.String idDigest, java.lang.String compoundDigest) compute entry key from id digest for a compound element according to configuration properties.
java.lang.String	getShardKey(java.lang.String idDigest) compute entry key from id digest according to configuration properties.

Methods inherited from class java.lang.Object

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

Field Detail

KEY_SHARDLENGTH

public static final java.lang.String KEY_SHARDLENGTH

property name to configure the length of the "shard" part of the entry key.

See Also:

Constant Field Values

KEY_SEGMENTLENGTH

public static final java.lang.String KEY_SEGMENTLENGTH

property name to configure the length of the segments in the remaining part of the entry key.

See Also:

Constant Field Values

KEY_SEGMENTCOUNT

public static final java.lang.String KEY_SEGMENTCOUNT

property name to configure the count of the segments in the remaining part of the entry key.

See Also:

Constant Field Values

KEY_KEYPATTERN

public static final java.lang.String KEY_KEYPATTERN

property name to the {@link String#format(String, Object...) pattern that combines shard part and segmented rest of digest into an entry key.

See Also:

Constant Field Values

Constructor Detail

StateStoreConfiguration

public StateStoreConfiguration(java.util.Properties properties)

create configuration from properties.

Method Detail

getEntryKey

public java.lang.String getEntryKey(java.lang.String idDigest)

compute entry key from id digest according to configuration properties.

getEntryKey

public java.lang.String getEntryKey(java.lang.String idDigest,
                                    java.lang.String compoundDigest)

compute entry key from id digest for a compound element according to configuration properties. In this case the shard ID is computed from the compoundDigest, and the complete idDigest is used for the segmented part.

getShardKey

public java.lang.String getShardKey(java.lang.String idDigest)

compute entry key from id digest according to configuration properties.