public interface FeatureWriter<T extends FeatureType,F extends Feature> extends Closeable
falseto allow new feature creation. These changes
One thing that is really nice about the approach to adding content is that the generation of FID is not left in the users control.
|Modifier and Type||Method and Description|
Release the underlying resources.
FeatureType this reader has been configured to create.
Query whether this FeatureWriter has another Feature.
Reads a Feature from the underlying AttributeReader.
Removes current Feature, must be called before hasNext.
Writes the current Feature, must be called before hasNext.
F next() throws IOException
This method may return a Feature even though hasNext() returns
allows FeatureWriters to provide an ability to append content.
IOException- if the writer has been closed or an I/O error occurs reading the next
void remove() throws IOException
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
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).
void write() throws IOException
FeautreWriters will need to allow FeatureSources of the same typeName to issue a FeatureEvent:
trueand 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().
boolean hasNext() throws IOException
Please note: it is more efficient to construct your FeatureWriter with a Filer (to skip entries you do not want), than to force the creation of entire Features only to skip over them.
FeatureWriters that support append operations will allow calls to next, even when
trueif an additional
IOException- if an I/O error occurs.
void close() throws IOException
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