Revision 44262 trunk/org.gvsig.desktop/org.gvsig.desktop.compat.cdc/org.gvsig.fmap.dal/org.gvsig.fmap.dal.swing/org.gvsig.fmap.dal.swing.impl/src/main/java/org/gvsig/featureform/swing/impl/dynformfield/selectableforeingkey/JDynFormFieldSelectableForeingKey.java

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JDynFormFieldSelectableForeingKey.java
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 */
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package org.gvsig.featureform.swing.impl.dynformfield.selectableforeingkey;
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import java.util.Objects;


  		




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import org.gvsig.expressionevaluator.Expression;


  		




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import org.gvsig.expressionevaluator.ExpressionUtils;


  		




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import org.gvsig.expressionevaluator.SymbolTable;


  		




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import org.gvsig.featureform.swing.JFeaturesForm.FeaturesFormContext;


  		




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import org.gvsig.fmap.dal.DALLocator;


  		




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import org.gvsig.fmap.dal.DataManager;


  		




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import static org.gvsig.fmap.dal.DataManager.DAL_FOREING_CODE;


  		




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import static org.gvsig.fmap.dal.DataManager.DAL_FOREING_LABEL;


  		




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import static org.gvsig.fmap.dal.DataManager.DAL_FOREING_TABLE;


  		




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import org.gvsig.fmap.dal.expressionevaluator.FeatureSymbolTable;


  		




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import org.gvsig.fmap.dal.feature.Feature;


  		




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import org.gvsig.fmap.dal.feature.FeatureStore;


  		




  
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import org.gvsig.fmap.dal.StoresRepository;


  		




  
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import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;


  		




  
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import org.gvsig.fmap.dal.feature.FeatureType;


  		




  
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import org.gvsig.fmap.dal.feature.ForeingKey;


  		




  
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import org.gvsig.tools.ToolsLocator;


  		




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import org.gvsig.tools.dynform.DynFormFieldDefinition;


  		




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import org.gvsig.tools.dynform.JDynForm;


  		




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import org.gvsig.tools.dynform.JDynFormField;


  		




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        super(serviceManager, componentsFactory, factory, definition, value);


  		




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    }


  		




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    private ForeingKey getForeingKey() {


  		




  
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        JDynForm.DynFormContext context = this.getForm().getContext();


  		




  
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        if( !(context instanceof FeaturesFormContext) ) {


  		




  
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            return null;


  		




  
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        }


  		




  
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        FeatureType featureType = ((FeaturesFormContext)context).getFeatureType();


  		




  
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        if( featureType==null ) {


  		




  
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            return null;


  		




  
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        }


  		




  
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        FeatureAttributeDescriptor attribute = featureType.getAttributeDescriptor(this.getName());


  		




  
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        if( attribute == null ) {


  		




  
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            return null;


  		




  
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        }


  		




  
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        ForeingKey foreingKey = attribute.getForeingKey();


  		




  
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        return foreingKey;


  		




  
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    }


  		




  
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    @Override


  		




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    protected DynObjectValueItem[] getAvailableValues() {


  		




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        String foreingLabel = getTagValueAsString(DAL_FOREING_LABEL, null);


  		




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        String foreingTableName = getTagValueAsString(DAL_FOREING_TABLE, null);


  		




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        String foreingCodeName = getTagValueAsString(DAL_FOREING_CODE, null);


  		




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        try {


  		




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            DataManager dataManager = DALLocator.getDataManager();


  		




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            Expression labelExpression = ExpressionUtils.createExpression(foreingLabel);


  		




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            FeatureSymbolTable featureSymbolTable = dataManager.createFeatureSymbolTable();


  		




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            SymbolTable symbolTable = featureSymbolTable.createParent();


  		




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            FeatureStore store = null;


  		




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            JDynForm.DynFormContext context = this.getForm().getContext();


  		




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            if( context instanceof FeaturesFormContext ) {


  		




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                store = ((FeaturesFormContext) context).getFeatureStore(foreingTableName);


  		




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            }


  		




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            if( store == null ) {


  		




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                LOGGER.warn("Can't locate store '"+foreingTableName+"' to get available values of field '"+this.getName()+"'.");


  		




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                return null;


  		




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            }


  		




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            int count = (int) store.getFeatureCount();


  		




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            DynObjectValueItem[] values = new DynObjectValueItem[count];


  		




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            int n = 0;


  		




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            for (Feature feature : store.getFeatureSet()) {


  		




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                featureSymbolTable.setFeature(feature);


  		




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                Object code = feature.get(foreingCodeName);


  		




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                Object label = labelExpression.execute(symbolTable);


  		




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                values[n++] = new DynObjectValueItem(code, Objects.toString(label, Objects.toString(code, "##ERROR##")));


  		




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            }


  		




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            return values;


  		




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        } catch (Exception ex) {


  		




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            LOGGER.warn("Can't get values from table '" + foreingTableName + "' for field '" + this.getForm().getDefinition().getName() + ":" + this.getName() + "'.", ex);


  		




  
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        final ForeingKey foreingKey = this.getForeingKey();


  		




  
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        if( foreingKey==null || !foreingKey.isSelectable() ) {


  		




  
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            return null;


  		




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        }


  		




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        return null;


  		




  
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        DynObjectValueItem[] values = foreingKey.getAvailableValues(null);


  		




  
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        return values;


  		




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    }


  		




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}


  		












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