me.prettyprint.cassandra.model
Class AbstractSliceQuery<K,N,V,T>

java.lang.Object
  me.prettyprint.cassandra.model.AbstractBasicQuery<K,N,T>
      me.prettyprint.cassandra.model.AbstractQuery<K,N,V,T>
          me.prettyprint.cassandra.model.AbstractSliceQuery<K,N,V,T>

Type Parameters:

N -

T -

All Implemented Interfaces:

Query<T>

Direct Known Subclasses:

IndexedSlicesQuery, ThriftMultigetSliceCounterQuery, ThriftMultigetSliceQuery, ThriftMultigetSubSliceQuery, ThriftMultigetSuperSliceCounterQuery, ThriftMultigetSuperSliceQuery, ThriftRangeSlicesCounterQuery, ThriftRangeSlicesQuery, ThriftRangeSubSlicesQuery, ThriftRangeSuperSlicesCounterQuery, ThriftRangeSuperSlicesQuery, ThriftSliceCounterQuery, ThriftSliceQuery, ThriftSubSliceQuery, ThriftSuperSliceCounterQuery, ThriftSuperSliceQuery

public abstract class AbstractSliceQuery<K,N,V,T>
extends AbstractQuery<K,N,V,T>
implements Query<T>

Base type for SliceQuery, RangeSliceQuery and MultigetSliceQuery

Author:

Ran Tavory

Field Summary

protected HSlicePredicate<N>

slicePredicate

Fields inherited from class me.prettyprint.cassandra.model.AbstractQuery

valueSerializer

Fields inherited from class me.prettyprint.cassandra.model.AbstractBasicQuery

columnFamilyName, columnNameSerializer, keySerializer, keyspace

Constructor Summary

AbstractSliceQuery(Keyspace k, Serializer<K> keySerializer, Serializer<N> nameSerializer, Serializer<V> valueSerializer)

Method Summary

Collection<N>	getColumnNames()
org.apache.cassandra.thrift.SlicePredicate	getPredicate()
Query<T>	setColumnNames(Collection<N> columnNames) Sets the column names to be retrieved by this query
Query<T>	setColumnNames(N... columnNames) Sets the column names to be retrieved by this query
Query<T>	setRange(N start, N finish, boolean reversed, int count) Set a predicate of start/finish to retrieve a list of columns in this range.
AbstractSliceQuery<K,N,V,T>	setReturnKeysOnly() Wraps the underlying call to HSlicePredicate.setKeysOnlyPredicate() Use this for a substantial performance increase when you only need the keys returned
protected String	toStringInternal()

Methods inherited from class me.prettyprint.cassandra.model.AbstractQuery

getValueSerializer, setValueSerializer

Methods inherited from class me.prettyprint.cassandra.model.AbstractBasicQuery

getColumnNameSerializer, getKeySerializer, setColumnFamily, setColumnNameSerializer, setKeySerializer

Methods inherited from class java.lang.Object

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

Methods inherited from interface me.prettyprint.hector.api.query.Query

execute

Field Detail

slicePredicate

protected final HSlicePredicate<N> slicePredicate

Constructor Detail

AbstractSliceQuery

public AbstractSliceQuery(Keyspace k,
                          Serializer<K> keySerializer,
                          Serializer<N> nameSerializer,
                          Serializer<V> valueSerializer)

Method Detail

setColumnNames

public Query<T> setColumnNames(N... columnNames)

Sets the column names to be retrieved by this query

Parameters:

columns - a varargs of column names

setColumnNames

public Query<T> setColumnNames(Collection<N> columnNames)

Sets the column names to be retrieved by this query

Parameters:

columns - a Collection of column names

setReturnKeysOnly

public AbstractSliceQuery<K,N,V,T> setReturnKeysOnly()

Wraps the underlying call to HSlicePredicate.setKeysOnlyPredicate() Use this for a substantial performance increase when you only need the keys returned

getColumnNames

public Collection<N> getColumnNames()

setRange

public Query<T> setRange(N start,
                         N finish,
                         boolean reversed,
                         int count)

Set a predicate of start/finish to retrieve a list of columns in this range.

Parameters:

start - Start key

finish - End key

reversed -

count -

Returns:

getPredicate

public org.apache.cassandra.thrift.SlicePredicate getPredicate()

Returns:

the thrift representation of the predicate

toStringInternal

protected String toStringInternal()