Hi!
I wrote a FeatureCollectionBuilder and a FeatureCollectionSchemaEditor for
that in Groovy using the Builder design pattern (
http://groovy.codehaus.org/Builders).
Look at this example code (from the unit tests). You can add and remove
Attributes to the FeatureSchema.
<pre>
private featureCollection
def setup() {
this.featureCollection = new FeatureCollectionBuilder().build {
schema {
attribute("id", AttributeType.INTEGER)
attribute("name", AttributeType.STRING)
}
features {
feature(id: 1, name: "foo")
feature(id: 2, name: "bar")
feature(id: 3, name: "baz")
feature(id: 4, name: "quux")
}
}
}
def "Add an attribute to the FeatureSchema"() {
when:
def collectionEditor = new
FeatureCollectionSchemaEditor(this.featureCollection)
collectionEditor.modifySchema {
addSchemaAttribute("street", AttributeType.STRING)
}
then:
def newFeatureSchema =
collectionEditor.getFeatureCollection().getFeatureSchema()
collectionEditor.getAttributeNames(newFeatureSchema) == ["id", "name",
"street"]
}
</pre>
If somebody wants to use it, I can upload the sourcecode (but it depends on
the groovy jar).
2010/6/2 Larry Becker <becker.la...@gmail.com>
> For tips on how to do this see:
> http://sourceforge.net/apps/mediawiki/jump-pilot/index.php?title=Extending_a_FeatureCollection_by_Adding_new_Attributes
>
>
> On Wed, Jun 2, 2010 at 9:17 AM, Larry Becker <becker.la...@gmail.com>wrote:
>
>> Hi Caroline,
>>
>> You seem to be making progress on your project. Your current problem is
>> that when you alter a schema it only affects new features. You need to
>> replace the old schema in each feature with the new one before copying
>> attributes.
>>
>> regards,
>> Larry
>>
>> 2010/6/2 Caroline Julliê Freitas Ribeiro <krolj...@gmail.com>
>>
>>> I tried to put a new attribute to a old Feature, I altered the Schema
>>> but looks like the size of the array whete stay the data of the Feature is
>>> not actualized.
>>>
>>> I got the following Stack trace:
>>>
>>> java.lang.ArrayIndexOutOfBoundsException: 3
>>> at
>>> com.vividsolutions.jump.feature.BasicFeature.getAttribute(BasicFeature.java:82)
>>> at
>>> com.vividsolutions.jump.workbench.ui.LayerTableModel$4.getValue(LayerTableModel.java:170)
>>> at
>>> com.vividsolutions.jump.workbench.ui.LayerTableModel$MyColumn.getValueAt(LayerTableModel.java:75)
>>> at
>>> com.vividsolutions.jump.workbench.ui.ColumnBasedTableModel.getValueAt(ColumnBasedTableModel.java:141)
>>> at
>>> com.vividsolutions.jump.workbench.ui.GUIUtil.chooseGoodColumnWidths(GUIUtil.java:408)
>>> at
>>> com.vividsolutions.jump.workbench.ui.AttributeTablePanel.initColumnWidths(AttributeTablePanel.java:415)
>>> at
>>> com.vividsolutions.jump.workbench.ui.AttributeTablePanel.<init>(AttributeTablePanel.java:307)
>>> at
>>> com.vividsolutions.jump.workbench.ui.AttributePanel.addTablePanel(AttributePanel.java:154)
>>> at
>>> com.vividsolutions.jump.workbench.ui.AttributePanel.layerAdded(AttributePanel.java:136)
>>> at
>>> com.vividsolutions.jump.workbench.ui.AttributeTab$5.layerAdded(AttributeTab.java:143)
>>> at
>>> com.vividsolutions.jump.workbench.ui.InfoModel.add(InfoModel.java:88)
>>> at
>>> com.vividsolutions.jump.workbench.ui.cursortool.FeatureInfoTool.gestureFinished(FeatureInfoTool.java:81)
>>> at
>>> com.vividsolutions.jump.workbench.ui.cursortool.AbstractCursorTool.fireGestureFinished(AbstractCursorTool.java:446)
>>> at
>>> com.vividsolutions.jump.workbench.ui.cursortool.SpecifyFeaturesTool.mouseClicked(SpecifyFeaturesTool.java:95)
>>> at
>>> com.vividsolutions.jump.workbench.ui.cursortool.LeftClickFilter.mouseClicked(LeftClickFilter.java:81)
>>> at
>>> com.vividsolutions.jump.workbench.ui.cursortool.DelegatingTool.mouseClicked(DelegatingTool.java:97)
>>> at
>>> java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:253)
>>> at java.awt.Component.processMouseEvent(Component.java:6266)
>>> at javax.swing.JComponent.processMouseEvent(JComponent.java:3255)
>>> at java.awt.Component.processEvent(Component.java:6028)
>>> at java.awt.Container.processEvent(Container.java:2041)
>>> at java.awt.Component.dispatchEventImpl(Component.java:4630)
>>> at java.awt.Container.dispatchEventImpl(Container.java:2099)
>>> at java.awt.Component.dispatchEvent(Component.java:4460)
>>> at
>>> java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
>>> at
>>> java.awt.LightweightDispatcher.processMouseEvent(Container.java:4247)
>>> at
>>> java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
>>> at java.awt.Container.dispatchEventImpl(Container.java:2085)
>>> at java.awt.Window.dispatchEventImpl(Window.java:2475)
>>> at java.awt.Component.dispatchEvent(Component.java:4460)
>>> at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
>>> at
>>> java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
>>> at
>>> java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
>>> at
>>> java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
>>> at
>>> java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
>>> at
>>> java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
>>> at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
>>>
>>> This is the code where I got the problem:
>>>
>>> Layer l = (Layer)cboLayers.getSelectedItem();
>>> FeatureCollectionWrapper col = l.getFeatureCollectionWrapper();
>>> FeatureSchema schema = col.getFeatureSchema();
>>> instalEsquema(schema,rs);
>>> List lista =col.getFeatures();
>>> while (rs.next()){
>>> for(Object o: lista){
>>> Feature f = (Feature) o;
>>> Feature fNew;
>>> String att =
>>> f.getAttribute(cboAtributos.getSelectedItem().toString()).toString();
>>> if (att.equals(rs.getString(txtCampo.getText()))){
>>> for(int i
>>> =nroAtributosAntes;i<schema.getAttributeCount();i++){
>>> f.setAttribute(i,
>>> rs.getString(schema.getAttributeName(i))); //Here is the problem
>>> }
>>> }
>>> }
>>> }
>>>
>>> private void instalEsquema(FeatureSchema schema, ResultSet rs) throws
>>> SQLException {
>>> //Here everything works fine....
>>> nroAtributosAntes = schema.getAttributeCount();
>>> ResultSetMetaData meta = rs.getMetaData();
>>> for(int i =1;i<=meta.getColumnCount();i++){
>>> schema.addAttribute(meta.getColumnLabel(i),
>>> AttributeType.STRING);
>>> }
>>> }
>>>
>>>
>>> Thanks
>>>
>>> --
>>> Caroline Julliê de Freitas Ribeiro
>>> Graduando em Análise e Desenvolvimento de Sistemas
>>>
>>> Instituto Federal Minas Gerais - IFMG
>>> Campus Bambuí
>>>
>>>
>>> ------------------------------------------------------------------------------
>>>
>>>
>>> _______________________________________________
>>> Jump-pilot-devel mailing list
>>> Jump-pilot-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
>>>
>>>
>>
>
>
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>
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