2010-02-22 19:42:25 +01:00
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package com.metaweb.gridworks.operations;
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2010-02-05 00:38:40 +01:00
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import java.util.Properties;
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import org.json.JSONException;
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2010-02-22 05:23:25 +01:00
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import org.json.JSONObject;
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2010-02-05 00:38:40 +01:00
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import org.json.JSONWriter;
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import com.metaweb.gridworks.history.Change;
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import com.metaweb.gridworks.history.HistoryEntry;
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import com.metaweb.gridworks.model.AbstractOperation;
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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.changes.ColumnRemovalChange;
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2010-02-19 00:27:40 +01:00
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public class ColumnRemovalOperation extends AbstractOperation {
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2010-03-03 05:19:58 +01:00
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final protected String _columnName;
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2010-02-05 00:38:40 +01:00
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2010-02-22 05:23:25 +01:00
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static public AbstractOperation reconstruct(Project project, JSONObject obj) throws Exception {
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return new ColumnRemovalOperation(
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obj.getString("columnName")
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);
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}
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2010-03-03 05:19:58 +01:00
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public ColumnRemovalOperation(
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String columnName
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) {
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_columnName = columnName;
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}
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2010-02-22 05:23:25 +01:00
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public void write(JSONWriter writer, Properties options)
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throws JSONException {
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writer.object();
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writer.key("op"); writer.value(OperationRegistry.s_opClassToName.get(this.getClass()));
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writer.key("description"); writer.value("Remove column " + _columnName);
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writer.key("columnName"); writer.value(_columnName);
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writer.endObject();
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}
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2010-02-05 00:38:40 +01:00
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2010-03-03 05:19:58 +01:00
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protected String getBriefDescription(Project project) {
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return "Remove column " + _columnName;
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}
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protected HistoryEntry createHistoryEntry(Project project) throws Exception {
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Column column = project.columnModel.getColumnByName(_columnName);
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if (column == null) {
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throw new Exception("No column named " + _columnName);
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}
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2010-03-06 08:43:45 +01:00
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String description = "Remove column " + column.getName();
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2010-03-03 05:19:58 +01:00
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Change change = new ColumnRemovalChange(project.columnModel.columns.indexOf(column));
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return new HistoryEntry(project, description, ColumnRemovalOperation.this, change);
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}
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2010-02-05 00:38:40 +01:00
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}
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