Package org.geotools.jdbc
Class JDBCJoiningFeatureReader
- Object
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- JDBCFeatureReader
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- JDBCJoiningFeatureReader
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- All Implemented Interfaces:
Closeable
,AutoCloseable
,FeatureReader<SimpleFeatureType,SimpleFeature>
public class JDBCJoiningFeatureReader extends JDBCFeatureReader
Feature reader that wraps multiple feature readers in a join query.- Author:
- Justin Deoliveira, OpenGeo
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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 JDBCJoiningFeatureReader(String sql, Connection cx, JDBCFeatureSource featureSource, SimpleFeatureType featureType, JoinInfo join, Query query)
JDBCJoiningFeatureReader(PreparedStatement st, Connection cx, JDBCFeatureSource featureSource, SimpleFeatureType featureType, JoinInfo join, 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.boolean
hasNext()
Query whether this FeatureReader has another Feature.SimpleFeature
next()
Reads the next Feature in the FeatureReader.-
Methods inherited from class JDBCFeatureReader
cleanup, ensureNext, ensureOpen, finalize, getFeatureType, getPrimaryKey, getQuery, init, readNextFeature, setNext
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Constructor Detail
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JDBCJoiningFeatureReader
public JDBCJoiningFeatureReader(String sql, Connection cx, JDBCFeatureSource featureSource, SimpleFeatureType featureType, JoinInfo join, Query query) throws SQLException, IOException
- Throws:
SQLException
IOException
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JDBCJoiningFeatureReader
public JDBCJoiningFeatureReader(PreparedStatement st, Connection cx, JDBCFeatureSource featureSource, SimpleFeatureType featureType, JoinInfo join, Query query) throws SQLException, IOException
- Throws:
SQLException
IOException
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Method Detail
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hasNext
public boolean hasNext() throws IOException
Description copied from interface:FeatureReader
Query whether this FeatureReader has another Feature.- Specified by:
hasNext
in interfaceFeatureReader<SimpleFeatureType,SimpleFeature>
- Overrides:
hasNext
in classJDBCFeatureReader
- Returns:
- True if there are more Features to be read. In other words, true if calls to next would return a feature rather than throwing an exception.
- Throws:
IOException
- If an error occurs determining if there are more Features.
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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>
- 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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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>
- Overrides:
close
in classJDBCFeatureReader
- Throws:
IOException
- if an I/O error occurs
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