Package org.hansken.plugin.extraction.runtime.grpc.client

Class ExtractionPluginDataReader

java.lang.Object

org.hansken.plugin.extraction.runtime.grpc.client.ExtractionPluginDataReader

public class ExtractionPluginDataReader
extends Object

This class is used to read trace data. It keeps track of traces and dataTypes which are available and it keeps a cache of RandomAccessData instances. These are created when read is called on the datastream for the first time.

Constructor Summary

Constructors

Constructor	Description
ExtractionPluginDataReader(ClientDataContext context)

Method Summary

Modifier and Type	Method	Description
void	markDataAvailable(SearchTrace trace)	Mark the dataTypes of the provided trace as available.
byte[]	read(String traceUid, String dataType, long position, int count)	Read count bytes of data starting on position from dataType of traceId.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtractionPluginDataReader

public ExtractionPluginDataReader(ClientDataContext context)

Method Detail

markDataAvailable

public void markDataAvailable(SearchTrace trace)

Mark the dataTypes of the provided trace as available.

Parameters:

trace - SearchTrace with available data

read

public byte[] read(String traceUid,
                   String dataType,
                   long position,
                   int count)
            throws IOException

Read count bytes of data starting on position from dataType of traceId.

Parameters:

traceUid - uid of the trace

dataType - which type of data to read (html, raw, ...)

position - offset to start reading

count - number of bytes to read

Returns:

byte array of available data

Throws:

IOException - when reading data fails

NoSuchElementException - if no data for a given traceId and dataType combination is available