svn-gvsig-desktop / tags / v1_0_RELEASE / libraries / libFMap / src / com / iver / cit / gvsig / fmap / edition / writers / shp / MultiShpWriter.java @ 9167
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package com.iver.cit.gvsig.fmap.edition.writers.shp; |
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import java.io.File; |
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import java.util.ArrayList; |
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import java.util.Properties; |
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import com.iver.cit.gvsig.fmap.core.FShape; |
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import com.iver.cit.gvsig.fmap.core.IFeature; |
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import com.iver.cit.gvsig.fmap.drivers.FieldDescription; |
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import com.iver.cit.gvsig.fmap.drivers.ILayerDefinition; |
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import com.iver.cit.gvsig.fmap.drivers.ITableDefinition; |
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import com.iver.cit.gvsig.fmap.drivers.SHPLayerDefinition; |
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import com.iver.cit.gvsig.fmap.edition.EditionException; |
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import com.iver.cit.gvsig.fmap.edition.IRowEdited; |
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import com.iver.cit.gvsig.fmap.edition.ISchemaManager; |
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import com.iver.cit.gvsig.fmap.edition.IWriter; |
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import com.iver.cit.gvsig.fmap.edition.ShpSchemaManager; |
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import com.iver.utiles.FileUtils; |
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/**
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* This writer wraps three ShpWriters, one for points, one for lines and one for
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* polygons geometry types. <br>
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*
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* It allows you to save a FLyrVect with MULTI shape type in SHP file format
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* (that doesnt allow to mix different geometry types). To do that, this IWriter
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* creates a different SHP file for any geometry type, in a transparent manner
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* for the programmer. <br>
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* If your geometries doesnt hava a given geometry type, the Writer wont create
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* a file for this geometry type. <br>
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* <code>
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* MultiShpWriter writer = new MultiShpWriter();
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* writer.setFile(dxfFile);
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* writer.initialize(layerDefinition);
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* writer.preProcess();
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* # obtain features from an iterator
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* writer.process(feature);
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* writer.postProcess();
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* </code>
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*
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*/
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public class MultiShpWriter implements IWriter { |
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/**
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* original file name selected by user
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*/
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String file = null; |
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/**
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* original layer definition
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*/
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ILayerDefinition layerDefinition;// only works with layers (no only
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// tables)
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IWriter polygons; |
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File polygonsFile;
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IWriter lines; |
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File linesFile;
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IWriter points; |
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File pointsFile;
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public void preProcess() throws EditionException { |
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} |
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/**
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* Returns all ShpWriter's created by this wrapper (only those wich writes a
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* type of the processed geometries)
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*
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* @return
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*/
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public IWriter[] getWriters() { |
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IWriter[] solution;
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ArrayList list = new ArrayList(); |
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if (polygons != null) |
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list.add(polygons); |
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if (lines != null) |
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list.add(lines); |
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if (points != null) |
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list.add(points); |
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solution = new IWriter[list.size()];
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list.toArray(solution); |
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return solution;
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} |
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public void postProcess() throws EditionException { |
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if (polygons != null) |
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polygons.postProcess(); |
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if (lines != null) |
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lines.postProcess(); |
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if (points != null) |
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points.postProcess(); |
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} |
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/**
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* Give access to the Writer that processes polygon geometries (and creates
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* it if it hasnt yet)
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*
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* @return
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* @throws EditionException
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*/
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private IWriter getPolygonsWriter() throws EditionException { |
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if (polygons == null) { |
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polygons = new ShpWriter();
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// TODO Hacer que LayerDefinition sea cloneable
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SHPLayerDefinition newDefinition = (SHPLayerDefinition) cloneDef(layerDefinition); |
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// we clone layerdefinition to change
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// shape type
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newDefinition.setShapeType(FShape.POLYGON); |
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polygonsFile = new File(file + "_POL.shp"); |
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newDefinition.setFile(polygonsFile); |
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((ShpWriter) polygons).setFile(polygonsFile); |
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polygons.initialize(newDefinition); |
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getSchemaManager(polygons, polygonsFile) |
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.createSchema(newDefinition); |
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//AZABALA: no si si es neceario
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polygons.preProcess(); |
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} |
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return polygons;
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} |
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/**
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* Given a Writer, and the file where we want to save persistent features,
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* it returns an associated ISchemaManager (whose responsability is to
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* create the new schema-for files create the new files)
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*
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* @param writer
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* @param file
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* @return
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*/
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private ISchemaManager getSchemaManager(final IWriter writer, |
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final File file) { |
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return new ShpSchemaManager(file.getAbsolutePath()); |
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} |
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/**
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* From a given layer definition, it creates a new layer definition 'clon'
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* of the initial. It is useful to avoid local changes made by individual
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* Writers to the definition affects the others writers (for example, change
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* the shape type of the writer)
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*
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* @param definition
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* @return
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*/
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private ILayerDefinition cloneDef(ILayerDefinition definition) {
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ILayerDefinition solution = null;
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if (definition instanceof SHPLayerDefinition) { |
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SHPLayerDefinition def = (SHPLayerDefinition) definition; |
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solution = new SHPLayerDefinition();
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solution.setName(def.getName()); |
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FieldDescription[] fields = def.getFieldsDesc();
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solution.setFieldsDesc(fields); |
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} |
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return solution;
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} |
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/**
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* Give access to the Writer that processes line geometries (and creates it
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* if it hasnt yet)
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*
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* @return
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* @throws EditionException
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*/
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private IWriter getLinesWriter() throws EditionException { |
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if (lines == null) { |
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lines = new ShpWriter();
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SHPLayerDefinition newDefinition = (SHPLayerDefinition) cloneDef(layerDefinition); |
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// we clone layerdefinition to change
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// shape type
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newDefinition.setShapeType(FShape.LINE); |
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linesFile = new File(file + "_LIN.shp"); |
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newDefinition.setFile(linesFile); |
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((ShpWriter) lines).setFile(linesFile); |
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lines.initialize(newDefinition); |
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getSchemaManager(lines, linesFile).createSchema(newDefinition); |
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lines.preProcess(); |
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} |
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return lines;
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} |
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/**
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* Give access to the Writer that processes point geometries (and creates it
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* if it hasnt yet)
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*
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* @return
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* @throws EditionException
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*/
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private IWriter getPointsWriter() throws EditionException { |
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if (points == null) { |
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points = new ShpWriter();
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SHPLayerDefinition newDefinition = (SHPLayerDefinition) cloneDef(layerDefinition); |
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// we clone layerdefinition to change
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// shape type
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newDefinition.setShapeType(FShape.POINT); |
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pointsFile = new File(file + "_PT.shp"); |
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newDefinition.setFile(pointsFile); |
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((ShpWriter) points).setFile(pointsFile); |
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points.initialize(newDefinition); |
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getSchemaManager(points, pointsFile).createSchema(newDefinition); |
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points.preProcess(); |
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} |
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return points;
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} |
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/**
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* Giving an edited row, writes it with the Writer associated to its
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* geometry type
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*/
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public void process(IRowEdited row) throws EditionException { |
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IFeature feature = (IFeature) row.getLinkedRow(); |
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int geometryType = feature.getGeometry().getGeometryType();
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switch (geometryType) {
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case FShape.POINT:
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getPointsWriter().process(row); |
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break;
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case FShape.LINE:
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case FShape.ELLIPSE:
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case FShape.ARC:
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case FShape.CIRCLE:
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getLinesWriter().process(row); |
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break;
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case FShape.POLYGON:
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getPolygonsWriter().process(row); |
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break;
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} |
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} |
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/**
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* Sets the file where save the results
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*
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* @param f
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*/
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public void setFile(File f) { |
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file = FileUtils.getFileWithoutExtension(f); |
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} |
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public String getFileName() { |
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return file;
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} |
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public String getCapability(String capability) { |
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return ""; |
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} |
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public void setCapabilities(Properties capabilities) { |
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} |
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public boolean canWriteAttribute(int sqlType) { |
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return true; |
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} |
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public void initialize(ITableDefinition layerDefinition) |
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throws EditionException {
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this.layerDefinition = (ILayerDefinition) layerDefinition;
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} |
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public String getName() { |
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return "MULTI File Writer"; |
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} |
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public ITableDefinition getTableDefinition() {
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return layerDefinition;
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} |
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public boolean canAlterTable() { |
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return true; |
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} |
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public boolean canSaveEdits() { |
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try {
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if (getPointsWriter().canSaveEdits())
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{ |
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if (getLinesWriter().canSaveEdits())
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{ |
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if (getPolygonsWriter().canSaveEdits())
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return true; |
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} |
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} |
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} catch (EditionException e) {
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e.printStackTrace(); |
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} |
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return false; |
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} |
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public boolean isWriteAll() { |
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return true; |
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} |
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} |