Package org.apache.geode.cache.util

Class StringPrefixPartitionResolver

java.lang.Object

org.apache.geode.cache.util.StringPrefixPartitionResolver

All Implemented Interfaces:

CacheCallback, Declarable, PartitionResolver<String,Object>

public class StringPrefixPartitionResolver
extends Object
implements PartitionResolver<String,Object>

This partition resolver requires every key of the partitioned region to be an instance of String and to contain at least one "|" delimiter. The prefix, the substring of the key that precedes the first delimiter, is returned by getRoutingObject.

Since:

Geode 1.2.0

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DEFAULT_DELIMITER	The default delimiter is "|".

Constructor Summary

Constructors

Constructor	Description
StringPrefixPartitionResolver()	Creates a prefix resolver with the default delimiter.

Method Summary

Modifier and Type	Method	Description
void	close()	Called when the region containing this callback is closed or destroyed, when the cache is closed, or when a callback is removed from a region using an AttributesMutator.
boolean	equals(Object o)
String	getName()	Returns the name of the PartitionResolver
Object	getRoutingObject(EntryOperation<String,Object> opDetails)	Returns the prefix of the String key that precedes the first "|" in the key.
int	hashCode()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.geode.cache.Declarable

init, initialize

Field Details

DEFAULT_DELIMITER

public static final String DEFAULT_DELIMITER

The default delimiter is "|". Currently this class only uses the default delimiter but in a future release configuring the delimiter may be supported.

See Also:

• Constant Field Values

Constructor Details

StringPrefixPartitionResolver

public StringPrefixPartitionResolver()

Creates a prefix resolver with the default delimiter.

Method Details

getRoutingObject

public Object getRoutingObject(EntryOperation<String,Object> opDetails)

Returns the prefix of the String key that precedes the first "|" in the key.

Specified by:

getRoutingObject in interface PartitionResolver<String,Object>

Parameters:

opDetails - the detail of the entry operation e.g. Region.get(Object)

Returns:

object associated with entry operation which allows the Partitioned Region to store associated data together

Throws:

ClassCastException - if the key is not an instance of String

IllegalArgumentException - if the key does not contain at least one "|".

getName

public String getName()

Description copied from interface: PartitionResolver

Returns the name of the PartitionResolver

Specified by:

getName in interface PartitionResolver<String,Object>

Returns:

String name

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

close

public void close()

Description copied from interface: CacheCallback

Called when the region containing this callback is closed or destroyed, when the cache is closed, or when a callback is removed from a region using an AttributesMutator.

Implementations should cleanup any external resources such as database connections. Any runtime exceptions this method throws will be logged.

It is possible for this method to be called multiple times on a single callback instance, so implementations must be tolerant of this.

Specified by:

close in interface CacheCallback

See Also:

• RegionService.close()
• Region.close()
• Region.localDestroyRegion()
• Region.destroyRegion()
• AttributesMutator