bundles/org.simantics.spreadsheet.graph/src/org/simantics/spreadsheet/graph/adapter/StringArrayCells.java

   1 package org.simantics.spreadsheet.graph.adapter;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collection;
   5 import java.util.Collections;
   6
   7 import org.simantics.databoard.Bindings;
   8 import org.simantics.databoard.binding.Binding;
   9 import org.simantics.db.ReadGraph;
  10 import org.simantics.db.Resource;
  11 import org.simantics.db.exception.DatabaseException;
  12 import org.simantics.db.layer0.variable.ConstantChildVariable;
  13 import org.simantics.db.layer0.variable.Variable;
  14 import org.simantics.db.layer0.variable.VariableFactory;
  15 import org.simantics.db.layer0.variable.Variables;
  16 import org.simantics.spreadsheet.Spreadsheets;
  17 import org.simantics.spreadsheet.resource.SpreadsheetResource;
  18
  19 public class StringArrayCells implements VariableFactory {
  20
  21         private Resource configuration;
  22
  23         public StringArrayCells(Resource configuration) {
  24                 this.configuration = configuration;
  25         }
  26
  27         final String[] propertyNames = { Variables.LABEL, "immutable" };
  28         final Binding[] bindings = { Bindings.STRING, Bindings.BOOLEAN };
  29
  30         private Collection<Variable> toVariables(ReadGraph graph, Variable variable, String[] data, int width) throws DatabaseException {
  31
  32                 SpreadsheetResource sr = SpreadsheetResource.getInstance(graph);
  33                 String location = graph.getPossibleRelatedValue(configuration, sr.HasLocation, Bindings.STRING);
  34                 if(location == null) return Collections.emptyList();
  35
  36                 int rows = data.length / width;
  37
  38                 ArrayList<Variable> result = new ArrayList<Variable>();
  39                 for(int offset=0,i=0;i<rows;i++) {
  40                         for(int j=0;j<width;j++) {
  41                                 String value = data[offset++];
  42                                 String valueLocation = Spreadsheets.offset(location, i, j);
  43                                 result.add(new ConstantChildVariable(variable, valueLocation, propertyNames, bindings, new Object[] { value, true }));
  44                         }
  45                 }
  46                 return result;
  47
  48         }
  49
  50         private Collection<Variable> error(ReadGraph graph, Variable variable, String message) throws DatabaseException {
  51
  52                 SpreadsheetResource sr = SpreadsheetResource.getInstance(graph);
  53                 String location = graph.getPossibleRelatedValue(configuration, sr.HasLocation, Bindings.STRING);
  54                 if(location == null) return Collections.emptyList();
  55
  56                 return Collections.<Variable>singletonList(new ConstantChildVariable(variable, location, propertyNames, bindings, new Object[] { message }));
  57
  58         }
  59
  60         @Override
  61         public Collection<Variable> evaluate(ReadGraph graph, Variable variable) throws DatabaseException {
  62
  63                 SpreadsheetResource sr = SpreadsheetResource.getInstance(graph);
  64                 String[] data = graph.getPossibleRelatedValue(configuration, sr.StringArrayCell_HasStringArray, Bindings.STRING_ARRAY);
  65                 if(data == null) return error(graph, variable, "No string array data.");
  66                 Integer width = graph.getPossibleRelatedValue(configuration, sr.StringArrayCell_HasWidth, Bindings.INTEGER);
  67                 if(width == null) return error(graph, variable, "Invalid width for string array.");
  68
  69                 return toVariables(graph, variable, data, width);
  70
  71         }
  72
  73 }