Revision 19405 trunk/libraries/libDataSourceBaseDrivers/src/org/gvsig/data/datastores/vectorial/driver/dbf/DBFFeatureCollection.java

View differences:

DBFFeatureCollection.java
8 8 
import org.gvsig.data.ComplexObservable;
9 9 
import org.gvsig.data.IObservable;
10 10 
import org.gvsig.data.vectorial.IFeature;
11 
import org.gvsig.data.vectorial.IFeatureAttributeDescriptor;
12 11 
import org.gvsig.data.vectorial.IFeatureCollection;
13 12 
import org.gvsig.data.vectorial.IFeatureID;
14 13 
import org.gvsig.data.vectorial.IFeatureType;
15 14 
import org.gvsig.data.vectorial.expansionadapter.FeatureManager;
16 
import org.nfunk.jep.JEP;
17 
import org.nfunk.jep.Node;
15 
import org.gvsig.data.vectorial.filter.FeatureFilterParser;
18 16 

  		




  19
  17
  
    
public class DBFFeatureCollection implements IFeatureCollection {


  		




  20
  18
  
    
	protected ComplexObservable observable = new ComplexObservable();


  		




  ......




  23
  21
  
    
	protected String filter;


  		




  24
  22
  
    
	protected String order;


  		




  25
  23
  
    
	protected DBFDriver driver;


  		




  26
  
  
    
	private JEP parser = null;


  		




  
  24
  
    
	private FeatureFilterParser parser = null;


  		




  27
  25
  
    
	protected FeatureManager featureManager;


  		




  28
  26
  
    
	protected long driverFeatureCount=0;


  		




  29
  27
  
    
	protected boolean modified=false;


  		




  ......




  39
  37
  
    
		this.order=order;


  		




  40
  38
  
    
	}


  		




  41
  39
  
    
	protected void parseExpression(String filter){


  		




  42
  
  
    
		parser = new JEP();


  		




  43
  
  
    
		parser.setAllowUndeclared(true);


  		




  44
  
  
    
		parser.addStandardFunctions();


  		




  45
  
  
    
//		parser.parseExpression(filter);


  		




  
  40
  
    
		parser = new FeatureFilterParser(filter,this.featureType);


  		




  46
  41
  
    
	}


  		




  47
  
  
    
	protected void setVarValue (String varName, Object value){


  		




  48
  
  
    
		parser.addVariable(varName, value);


  		




  49
  
  
    
	}


  		




  
  42
  
    

  		




  50
  43
  
    
	protected boolean evaluate(IFeature feature) throws Exception{


  		




  51
  
  
    
		if (filter==null)


  		




  
  44
  
    
		if (filter==null){


  		




  52
  45
  
    
			return true;


  		




  53
  
  
    

  		




  54
  
  
    
		for (int i=0;i<featureType.size();i++){


  		




  55
  
  
    
			IFeatureAttributeDescriptor fad=(IFeatureAttributeDescriptor)featureType.get(i);


  		




  56
  
  
    
			setVarValue(fad.getName(),feature.get(i));


  		




  57
  46
  
    
		}


  		




  58
  
  
    

  		




  59
  
  
    
		Node function = parser.parse(filter);


  		




  60
  
  
    
		Object output = parser.evaluate(function);


  		




  61
  
  
    
		if (output instanceof Double){


  		




  62
  
  
    
			return (((Double)output).doubleValue()!=0.0);


  		




  63
  
  
    
		}


  		




  64
  
  
    

  		




  65
  
  
    
		return(parser.getValue()!=0.0);


  		




  
  47
  
    
		return parser.match(feature);


  		




  66
  48
  
    
	}


  		




  
  49
  
    

  		




  67
  50
  
    
	public int size() {


  		




  68
  51
  
    
		if (filter==null){


  		




  69
  52
  
    
			return (int)(driverFeatureCount+featureManager.getNum());


  		












Also available in:  Unified diff