Examples of org.geotools.data.Transaction.rollback()

org.geotools.data.Transaction.rollback()
Undoes all transactions made since the last commit or rollback.
FeatureSources will need to issue any changes notifications using a FeatureEvent.FEATURES_CHANGED. This will need to be issued to all FeatureSources with the same typeName and Transaction.
@throws DataSourceException if there are problems with the datasource. @throws UnsupportedOperationException if the rollback method is notsupported by this datasource. @see #setAutoCommit(boolean)

        assertEquals(roadFeatures.length - 1, count(reader));


        reader = data.getFeatureReader(new DefaultQuery("road", rd1Filter), t);
        assertEquals(0, count(reader));


        t.rollback();
        reader = data.getFeatureReader(new DefaultQuery("road", Filter.EXCLUDE), t);
        assertEquals(0, count(reader));


        reader = data.getFeatureReader(new DefaultQuery("road"), t);
        assertEquals(roadFeatures.length, count(reader));

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            count = store.getCount(Query.ALL);
            assertEquals(2, count);


            assertEquals(1, source.getCount(Query.ALL));
            transaction.rollback();
            assertEquals(1, store.getCount(Query.ALL));


            transaction.close();


            {

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            LOGGER.info(core.countChanges(changes)
                    + " changes coming from Central succesfully applied");
        } catch (Throwable t) {
            // make sure we rollback the transaction in case of _any_ exception
            try {
                transaction.rollback();
            } catch (IOException e) {
                LOGGER.log(Level.SEVERE, "Rollback failed. This is unexpected", e);
            }


            if (t instanceof GSSException) {

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                } catch (Exception e) {
                    LOGGER.log(Level.SEVERE, "Synchronisation of table " + tableName + " for unit "
                            + unitName + " failed", e);


                    // rollback all current changes
                    transaction.rollback();


                    // if anything at all went bad mark the layer synch as failed
                    FeatureStore<SimpleFeatureType, SimpleFeature> tuMetadata = (FeatureStore<SimpleFeatureType, SimpleFeature>) ds
                            .getFeatureSource(SYNCH_UNIT_TABLES);
                    SimpleFeatureType tuSchema = tuMetadata.getSchema();

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                // all sub exceptions in this catch block should be logged, not thrown
                // as the triggering exception will be thrown
    
                //failure, rollback transaction
                try {
                    transaction.rollback();
                } catch (Exception e1) {
                    LOGGER.log(Level.WARNING, "Error rolling back transaction",e1);
                }
    
                //attempt to drop the type that was created as well

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                        featureStore.addFeatures(features);
                        
                        tx.commit();
                    }
                    catch(Exception e) {
                        tx.rollback();
                    }
                    finally {
                        tx.close();
                    }
                }

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                } catch (Exception e) {
                    LOGGER.log(Level.SEVERE, "Synchronisation of table " + tableName + " for unit "
                            + unitName + " failed", e);


                    // rollback all current changes
                    transaction.rollback();


                    // if anything at all went bad mark the layer synch as failed
                    FeatureStore<SimpleFeatureType, SimpleFeature> tuMetadata = (FeatureStore<SimpleFeatureType, SimpleFeature>) ds
                            .getFeatureSource(SYNCH_UNIT_TABLES);
                    SimpleFeatureType tuSchema = tuMetadata.getSchema();

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            LOGGER.info(core.countChanges(changes)
                    + " changes coming from Central succesfully applied");
        } catch (Throwable t) {
            // make sure we rollback the transaction in case of _any_ exception
            try {
                transaction.rollback();
            } catch (IOException e) {
                LOGGER.log(Level.SEVERE, "Rollback failed. This is unexpected", e);
            }


            if (t instanceof GSSException) {

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                        featureStore.addFeatures(features);
                        
                        tx.commit();
                    }
                    catch(Exception e) {
                        tx.rollback();
                    }
                    finally {
                        tx.close();
                    }
                }

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