Class JDBCUpdateFeatureWriter
- Object
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- JDBCFeatureReader
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- JDBCUpdateFeatureWriter
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- All Implemented Interfaces:
Closeable
,AutoCloseable
,FeatureReader<SimpleFeatureType,SimpleFeature>
,FeatureWriter<SimpleFeatureType,SimpleFeature>
- Direct Known Subclasses:
JDBCUpdateInsertFeatureWriter
public class JDBCUpdateFeatureWriter extends JDBCFeatureReader implements FeatureWriter<SimpleFeatureType,SimpleFeature>
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Nested Class Summary
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Nested classes/interfaces inherited from class JDBCFeatureReader
JDBCFeatureReader.ResultSetFeature
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Field Summary
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Fields inherited from class JDBCFeatureReader
builder, callback, columnNames, cx, dataStore, featureSource, featureType, geometryFactory, hints, LOGGER, md, next, offset, pkey, query, rs, screenMap, st, TRACE_ENABLED, tracer, tx
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Constructor Summary
Constructors Constructor Description JDBCUpdateFeatureWriter(String sql, Connection cx, JDBCFeatureSource featureSource, Query query)
JDBCUpdateFeatureWriter(PreparedStatement ps, Connection cx, JDBCFeatureSource featureSource, Query query)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
close()
Release the underlying resources associated with this stream.SimpleFeature
next()
Reads the next Feature in the FeatureReader.void
remove()
Removes current Feature, must be called before hasNext.void
write()
Writes the current Feature, must be called before hasNext.-
Methods inherited from class JDBCFeatureReader
cleanup, ensureNext, ensureOpen, finalize, getFeatureType, getPrimaryKey, getQuery, hasNext, init, readNextFeature, setNext
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Methods inherited from class Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface FeatureWriter
getFeatureType, hasNext
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Constructor Detail
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JDBCUpdateFeatureWriter
public JDBCUpdateFeatureWriter(String sql, Connection cx, JDBCFeatureSource featureSource, Query query) throws SQLException, IOException
- Throws:
SQLException
IOException
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JDBCUpdateFeatureWriter
public JDBCUpdateFeatureWriter(PreparedStatement ps, Connection cx, JDBCFeatureSource featureSource, Query query) throws SQLException, IOException
- Throws:
SQLException
IOException
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Method Detail
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next
public SimpleFeature next() throws IOException, IllegalArgumentException, NoSuchElementException
Description copied from interface:FeatureReader
Reads the next Feature in the FeatureReader.- Specified by:
next
in interfaceFeatureReader<SimpleFeatureType,SimpleFeature>
- Specified by:
next
in interfaceFeatureWriter<SimpleFeatureType,SimpleFeature>
- Overrides:
next
in classJDBCFeatureReader
- Returns:
- The next feature in the reader.
- Throws:
IOException
- If an error occurs reading the Feature.NoSuchElementException
- If there are no more Features in the Reader.IllegalArgumentException
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remove
public void remove() throws IOException
Description copied from interface:FeatureWriter
Removes current Feature, must be called before hasNext.FeatureWriters will need to allow all FeatureSources of the same typeName to issue a FeatureEvent event of type
FeatureEvent.FEATURES_REMOVED
when this method is called.If this FeatureWriter is opperating against a Transaction FEATURES_REMOVED events should only be sent to FeatureSources operating on the same Transaction. When Transaction commit() is called other FeatureSources will be informed of the modifications.
When the current Feature has been provided as new content, this method "cancels" the add opperation (and notification needed).
- Specified by:
remove
in interfaceFeatureWriter<SimpleFeatureType,SimpleFeature>
- Throws:
IOException
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write
public void write() throws IOException
Description copied from interface:FeatureWriter
Writes the current Feature, must be called before hasNext.FeautreWriters will need to allow FeatureSources of the same typeName to issue a FeatureEvent:
- FeatureEvent.FEATURES_ADDED: when next() has been called with hasNext() equal to
false
. - FeatureEvent.FEATURES_MODIFIED: when next has been called with hasNext() equal to
true
and the resulting Feature has indeed been modified.
If this FeatureWriter is opperating against a Transaction the FEATURES_MODIFIED or FEATURES_ADDED events should only be sent to FeatureSources opperating on the same Transaction. When Transaction commit() is called other FeatureSources will be informed of the modifications.
If you have not called write() when you call hasNext() or next(), no modification will occur().
- Specified by:
write
in interfaceFeatureWriter<SimpleFeatureType,SimpleFeature>
- Throws:
IOException
- FeatureEvent.FEATURES_ADDED: when next() has been called with hasNext() equal to
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close
public void close() throws IOException
Description copied from interface:FeatureReader
Release the underlying resources associated with this stream.- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Specified by:
close
in interfaceFeatureReader<SimpleFeatureType,SimpleFeature>
- Specified by:
close
in interfaceFeatureWriter<SimpleFeatureType,SimpleFeature>
- Overrides:
close
in classJDBCFeatureReader
- Throws:
IOException
- if an I/O error occurs
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