org.trellisldp.ext.cassandra.query.binary

Class BinaryReadQuery

java.lang.Object

org.trellisldp.ext.cassandra.query.CassandraQuery

org.trellisldp.ext.cassandra.query.binary.BinaryQuery

org.trellisldp.ext.cassandra.query.binary.BinaryReadQuery

Direct Known Subclasses:

Read, ReadRange

public abstract class BinaryReadQuery
extends BinaryQuery

A query that reads binary data from Cassandra.

Field Summary

Fields inherited from class org.trellisldp.ext.cassandra.query.CassandraQuery

consistency, queryString, readBinaryWorkers, session, writeWorkers

Method Summary

Modifier and Type	Method and Description
protected java.io.InputStream	retrieve(org.apache.commons.rdf.api.IRI id, com.datastax.oss.driver.api.core.cql.BoundStatement statement)

Methods inherited from class org.trellisldp.ext.cassandra.query.CassandraQuery

executeSyncRead, preparedStatement, preparedStatementAsync

Methods inherited from class java.lang.Object

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

Method Detail

retrieve

protected java.io.InputStream retrieve(org.apache.commons.rdf.api.IRI id,
                                       com.datastax.oss.driver.api.core.cql.BoundStatement statement)

Parameters:

id - an IRI for a binary

statement - a CQL query that retrieves the chunk indexes of chunks for id

Returns:

An InputStream of bytes as requested. The skip method of this InputStream is guaranteed to skip as many bytes as asked.