Package com.orientechnologies.orient.core.index.engine

Interface IndexEngineValidator<K,V>

Type Parameters:

K - the key type.

V - the value type.

All Known Implementing Classes:

IndexEngineValidatorIncrement, UniqueIndexEngineValidator

public interface IndexEngineValidator<K,V>

Put operation validator.

Field Summary

Fields

Modifier and Type	Field	Description
static final Object	IGNORE	Indicates that a put request should be silently ignored by the store.

Method Summary

Modifier and Type	Method	Description
Object	validate(K key, V oldValue, V newValue)	Validates the put operation for the given key, the old value and the new value.

Field Details

IGNORE

static final Object IGNORE

Indicates that a put request should be silently ignored by the store.

See Also:

• validate(Object, Object, Object)

Method Details

validate

Object validate(K key,
 V oldValue,
 V newValue)

Validates the put operation for the given key, the old value and the new value. May throw an exception to abort the current put operation with an error.

Parameters:

key - the put operation key.

oldValue - the old value or null if no value is currently stored.

newValue - the new value passed to validatedPut(Object, OIdentifiable, Validator).

Returns:

the new value to store, may differ from the passed one, or the special IGNORE value to silently ignore the put operation request being processed.