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java.lang.Objectorg.apache.hadoop.contrib.index.mapred.IntermediateForm
public class IntermediateForm
An intermediate form for one or more parsed Lucene documents and/or delete terms. It actually uses Lucene file format as the format for the intermediate form by using RAM dir files. Note: If process(*) is ever called, closeWriter() should be called. Otherwise, no need to call closeWriter().
| Constructor Summary | |
|---|---|
IntermediateForm()
Constructor |
|
| Method Summary | |
|---|---|
void |
closeWriter()
Close the Lucene index writer associated with the intermediate form, if created. |
void |
configure(IndexUpdateConfiguration iconf)
Configure using an index update configuration. |
Iterator<org.apache.lucene.index.Term> |
deleteTermIterator()
Get an iterator for the delete terms in the intermediate form. |
org.apache.lucene.store.Directory |
getDirectory()
Get the ram directory of the intermediate form. |
void |
process(DocumentAndOp doc,
org.apache.lucene.analysis.Analyzer analyzer)
This method is used by the index update mapper and process a document operation into the current intermediate form. |
void |
process(IntermediateForm form)
This method is used by the index update combiner and process an intermediate form into the current intermediate form. |
void |
readFields(DataInput in)
Deserialize the fields of this object from in. |
String |
toString()
|
void |
write(DataOutput out)
Serialize the fields of this object to out. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
|---|
public IntermediateForm()
throws IOException
IOException| Method Detail |
|---|
public void configure(IndexUpdateConfiguration iconf)
iconf - the index update configurationpublic org.apache.lucene.store.Directory getDirectory()
public Iterator<org.apache.lucene.index.Term> deleteTermIterator()
public void process(DocumentAndOp doc,
org.apache.lucene.analysis.Analyzer analyzer)
throws IOException
doc - input document operationanalyzer - the analyzer
IOException
public void process(IntermediateForm form)
throws IOException
form - the input intermediate form
IOException
public void closeWriter()
throws IOException
IOExceptionpublic String toString()
toString in class Object
public void write(DataOutput out)
throws IOException
Writableout.
write in interface Writableout - DataOuput to serialize this object into.
IOException
public void readFields(DataInput in)
throws IOException
Writablein.
For efficiency, implementations should attempt to re-use storage in the existing object where possible.
readFields in interface Writablein - DataInput to deseriablize this object from.
IOException
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