Package io.permazen.core

Class MapValueIndex<K,V>

java.lang.Object

io.permazen.core.SchemaItem

io.permazen.core.Index

io.permazen.core.SimpleIndex<T>

io.permazen.core.ComplexSubFieldIndex<NavigableMap<K,V>,V>

io.permazen.core.MapValueIndex<K,V>

Type Parameters:

K - map key type

V - map value type

public class MapValueIndex<K,V>
extends ComplexSubFieldIndex<NavigableMap<K,V>,V>

An index on the values of a map field.

Method Summary

Modifier and Type	Method	Description
CoreIndex2<V,ObjId,K>	getValueIndex(Transaction tx)	Get this index's view of the given transaction, including entry key.
<R> R	visit(IndexSwitch<R> target)	Apply visitor pattern.

Methods inherited from class io.permazen.core.ComplexSubFieldIndex

getIndex

Methods inherited from class io.permazen.core.SimpleIndex

getEncoding, getField, getKey, getKey

Methods inherited from class io.permazen.core.Index

genericize, getEncodings, getFields, getKey, getKey, getObjType, isComposite, toString

Methods inherited from class io.permazen.core.SchemaItem

getName, getSchema, getSchemaId, getStorageId

Methods inherited from class java.lang.Object

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

Method Details

getValueIndex

public CoreIndex2<V,ObjId,K> getValueIndex(Transaction tx)

Get this index's view of the given transaction, including entry key.

The returned index includes the map values and their associated keys.

Parameters:

tx - transaction

Returns:

view of this index in tx

Throws:

IllegalArgumentException - if tx is null

visit

public <R> R visit(IndexSwitch<R> target)

Description copied from class: Index

Apply visitor pattern.

Specified by:

visit in class Index

Type Parameters:

R - visitor return type

Parameters:

target - target to invoke

Returns:

return value from the method of target corresponding to this instance's type