org.apache.ignite.cache

Class QueryEntityPatch

java.lang.Object

org.apache.ignite.cache.QueryEntityPatch

public class QueryEntityPatch
extends Object

Query entity patch which contain SchemaAbstractOperation operations for changing query entity. This patch can only add properties to entity and can't remove them. Other words, the patch will contain only add operations (e.g.: SchemaAlterTableAddColumnOperation, SchemaIndexCreateOperation ) and not remove ones. It contain only add operation because at the moment we don't have history of schema operations and by current state we can't understand some property was already deleted or it has not been added yet.

Method Summary

Modifier and Type	Method and Description
static QueryEntityPatch	conflict(String conflicts) Builder method for patch with conflicts.
static QueryEntityPatch	empty() Builder method for empty patch.
String	getConflictsMessage()
Collection<org.apache.ignite.internal.processors.query.schema.operation.SchemaAbstractOperation>	getPatchOperations()
boolean	hasConflict() Check for conflict in this patch.
boolean	isEmpty()
static QueryEntityPatch	patch(Collection<org.apache.ignite.internal.processors.query.schema.operation.SchemaAbstractOperation> patchOperations) Builder method for patch with operations.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

conflict

public static QueryEntityPatch conflict(String conflicts)

Builder method for patch with conflicts.

Parameters:

conflicts - Conflicts.

Returns:

Query entity patch with conflicts.

empty

public static QueryEntityPatch empty()

Builder method for empty patch.

Returns:

Query entity patch.

patch

public static QueryEntityPatch patch(Collection<org.apache.ignite.internal.processors.query.schema.operation.SchemaAbstractOperation> patchOperations)

Builder method for patch with operations.

Parameters:

patchOperations - Operations for modification.

Returns:

Query entity patch which contain SchemaAbstractOperation operations for changing query entity.

hasConflict

public boolean hasConflict()

Check for conflict in this patch.

Returns:

true if patch has conflict.

isEmpty

public boolean isEmpty()

Returns:

true if patch is empty and can't be applying.

getConflictsMessage

public String getConflictsMessage()

Returns:

Conflicts.

getPatchOperations

public Collection<org.apache.ignite.internal.processors.query.schema.operation.SchemaAbstractOperation> getPatchOperations()

Returns:

Patch operations for applying.

toString

public String toString()

Overrides:

toString in class Object