82 lines
2.5 KiB
Java
82 lines
2.5 KiB
Java
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package com.metaweb.gridworks.model.operations;
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import java.util.List;
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import java.util.Properties;
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import org.json.JSONException;
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import org.json.JSONObject;
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import org.json.JSONWriter;
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import com.metaweb.gridworks.browsing.RowVisitor;
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import com.metaweb.gridworks.expr.Evaluable;
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import com.metaweb.gridworks.expr.ExpressionUtils;
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import com.metaweb.gridworks.expr.Parser;
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import com.metaweb.gridworks.model.Cell;
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import com.metaweb.gridworks.model.Column;
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import com.metaweb.gridworks.model.Project;
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import com.metaweb.gridworks.model.Row;
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import com.metaweb.gridworks.model.changes.CellChange;
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public class TextTransformOperation extends EngineDependentMassCellOperation {
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private static final long serialVersionUID = -7698202759999537298L;
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final protected String _expression;
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public TextTransformOperation(JSONObject engineConfig, int cellIndex, String expression) {
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super(engineConfig, cellIndex);
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_expression = expression;
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}
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@Override
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public void write(JSONWriter writer, Properties options)
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throws JSONException {
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// TODO Auto-generated method stub
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}
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@Override
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protected String createDescription(Column column,
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List<CellChange> cellChanges) {
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return "Text transform on " + cellChanges.size() +
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" cells in column " + column.getHeaderLabel() + ": " + _expression;
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}
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@Override
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protected RowVisitor createRowVisitor(Project project, List<CellChange> cellChanges) throws Exception {
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Evaluable eval = new Parser(_expression).getExpression();
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Properties bindings = ExpressionUtils.createBindings(project);
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return new RowVisitor() {
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int cellIndex;
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Properties bindings;
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List<CellChange> cellChanges;
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Evaluable eval;
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public RowVisitor init(int cellIndex, Properties bindings, List<CellChange> cellChanges, Evaluable eval) {
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this.cellIndex = cellIndex;
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this.bindings = bindings;
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this.cellChanges = cellChanges;
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this.eval = eval;
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return this;
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}
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@Override
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public boolean visit(Project project, int rowIndex, Row row) {
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if (cellIndex < row.cells.size()) {
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Cell cell = row.cells.get(cellIndex);
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if (cell.value != null) {
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ExpressionUtils.bind(bindings, row, cell);
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Cell newCell = new Cell(eval.evaluate(bindings), cell.recon);
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CellChange cellChange = new CellChange(rowIndex, cellIndex, cell, newCell);
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cellChanges.add(cellChange);
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}
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}
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return false;
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}
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}.init(_cellIndex, bindings, cellChanges, eval);
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}
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}
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