org.apache.cassandra.db

Class MultiCBuilder

java.lang.Object

org.apache.cassandra.db.MultiCBuilder

public abstract class MultiCBuilder
extends java.lang.Object

Builder that allow to build multiple Clustering/Slice.Bound at the same time.

Constructor Summary

Constructors

Constructor and Description
MultiCBuilder()

Method Summary

Modifier and Type	Method and Description
abstract MultiCBuilder	addAllElementsToAll(java.util.List<java.util.List<java.nio.ByteBuffer>> values) Adds individually each of the specified list of elements to the end of all of the existing composites.
abstract MultiCBuilder	addEachElementToAll(java.util.List<java.nio.ByteBuffer> values) Adds individually each of the specified elements to the end of all of the existing clusterings.
abstract MultiCBuilder	addElementToAll(java.nio.ByteBuffer value) Adds the specified element to all the clusterings.
abstract java.util.NavigableSet<Clustering>	build() Builds the clusterings.
abstract java.util.NavigableSet<Slice.Bound>	buildBound(boolean isStart, boolean isInclusive) Builds the clusterings with the specified EOC.
abstract boolean	containsNull() Checks if the clusterings contains null elements.
abstract boolean	containsUnset() Checks if the clusterings contains unset elements.
static MultiCBuilder	create(ClusteringComparator comparator) Creates a new empty MultiCBuilder.
abstract boolean	hasMissingElements() Checks if some empty list of values have been added
boolean	hasRemaining() Checks if some elements can still be added to the clusterings.
abstract int	remainingCount() Returns the number of elements that can be added to the clusterings.
static MultiCBuilder	wrap(CBuilder builder) Wraps an existing CBuilder to provide him with a MultiCBuilder interface for the sake of passing it to Restriction.appendTo.

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiCBuilder

public MultiCBuilder()

Method Detail

create

public static MultiCBuilder create(ClusteringComparator comparator)

Creates a new empty MultiCBuilder.

wrap

public static MultiCBuilder wrap(CBuilder builder)

Wraps an existing CBuilder to provide him with a MultiCBuilder interface for the sake of passing it to Restriction.appendTo. The resulting MultiCBuilder will still only be able to create a single clustering/bound and an IllegalArgumentException will be thrown if elements that added that would correspond to building multiple clusterings.

addElementToAll

public abstract MultiCBuilder addElementToAll(java.nio.ByteBuffer value)

Adds the specified element to all the clusterings.

If this builder contains 2 clustering: A-B and A-C a call to this method to add D will result in the clusterings: A-B-D and A-C-D.

Parameters:

value - the value of the next element

Returns:

this MulitCBuilder

addEachElementToAll

public abstract MultiCBuilder addEachElementToAll(java.util.List<java.nio.ByteBuffer> values)

Adds individually each of the specified elements to the end of all of the existing clusterings.

If this builder contains 2 clusterings: A-B and A-C a call to this method to add D and E will result in the 4 clusterings: A-B-D, A-B-E, A-C-D and A-C-E.

Parameters:

values - the elements to add

Returns:

this CompositeBuilder

addAllElementsToAll

public abstract MultiCBuilder addAllElementsToAll(java.util.List<java.util.List<java.nio.ByteBuffer>> values)

Adds individually each of the specified list of elements to the end of all of the existing composites.

If this builder contains 2 composites: A-B and A-C a call to this method to add [[D, E], [F, G]] will result in the 4 composites: A-B-D-E, A-B-F-G, A-C-D-E and A-C-F-G.

Parameters:

values - the elements to add

Returns:

this CompositeBuilder

remainingCount

public abstract int remainingCount()

Returns the number of elements that can be added to the clusterings.

Returns:

the number of elements that can be added to the clusterings.

containsNull

public abstract boolean containsNull()

Checks if the clusterings contains null elements.

Returns:

true if the clusterings contains null elements, false otherwise.

containsUnset

public abstract boolean containsUnset()

Checks if the clusterings contains unset elements.

Returns:

true if the clusterings contains unset elements, false otherwise.

hasMissingElements

public abstract boolean hasMissingElements()

Checks if some empty list of values have been added

Returns:

true if the clusterings have some missing elements, false otherwise.

build

public abstract java.util.NavigableSet<Clustering> build()

Builds the clusterings.

Returns:

the clusterings

buildBound

public abstract java.util.NavigableSet<Slice.Bound> buildBound(boolean isStart,
                                                               boolean isInclusive)

Builds the clusterings with the specified EOC.

Returns:

the clusterings

hasRemaining

public boolean hasRemaining()

Checks if some elements can still be added to the clusterings.

Returns:

true if it is possible to add more elements to the clusterings, false otherwise.