Examples of org.geotools.data.TransactionStateDiff.writer()

Class org.geotools.data.TransactionStateDiff

Examples of org.geotools.data.TransactionStateDiff.writer()

org.geotools.data.TransactionStateDiff.writer()
Convience Method for a Transaction based FeatureWriter
Constructs a DiffFeatureWriter that works against this Transaction.
@param typeName Type Name to record differences against @param filter @return A FeatureWriter that records Differences against a FeatureReader @throws IOException If a FeatureRader could not be constucted to recorddifferences against

        //assertTrue(reader instanceof DiffFeatureReader);  //currently it is being wraped by a FilteringFeatureReader
        assertEquals(type, reader.getFeatureType());
        assertEquals(1, count(reader));


        TransactionStateDiff state = (TransactionStateDiff) t.getState(data);
        FeatureWriter<SimpleFeatureType, SimpleFeature> writer = state.writer("road", Filter.INCLUDE);
        SimpleFeature feature;


        while (writer.hasNext()) {
            feature = writer.next();

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        // feature reader
        assertEquals(type, reader.getFeatureType());
        assertEquals(1, count(reader));


        TransactionStateDiff state = (TransactionStateDiff) t.getState(data);
        FeatureWriter<SimpleFeatureType, SimpleFeature> writer = state.writer("road", Filter.INCLUDE);
        SimpleFeature feature;


        while( writer.hasNext() ) {
            feature = writer.next();

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        }
      }
    } else {
      TransactionStateDiff state = state(transaction);
      if (state != null) {
        writer = state.writer(typeName, filter);
      } else {
        throw new UnsupportedOperationException("not implemented...");
      }
    }

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