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this software without specific prior written permission.
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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*/
package com.google.refine.browsing.facets;
import java.util.Properties;
import java.util.regex.Pattern;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONWriter;
import com.google.refine.browsing.FilteredRecords;
import com.google.refine.browsing.FilteredRows;
import com.google.refine.browsing.RecordFilter;
import com.google.refine.browsing.RowFilter;
import com.google.refine.browsing.filters.AnyRowRecordFilter;
import com.google.refine.browsing.filters.ExpressionStringComparisonRowFilter;
import com.google.refine.expr.Evaluable;
import com.google.refine.grel.ast.VariableExpr;
import com.google.refine.model.Column;
import com.google.refine.model.Project;
public class TextSearchFacet implements Facet {
/*
* Configuration
*/
protected String _name;
protected String _columnName;
protected String _query;
protected String _mode;
protected boolean _caseSensitive;
/*
* Derived configuration
*/
protected int _cellIndex;
protected Pattern _pattern;
public TextSearchFacet() {
}
@Override
public void write(JSONWriter writer, Properties options)
throws JSONException {
writer.object();
writer.key("name"); writer.value(_name);
writer.key("columnName"); writer.value(_columnName);
writer.key("query"); writer.value(_query);
writer.key("mode"); writer.value(_mode);
writer.key("caseSensitive"); writer.value(_caseSensitive);
writer.endObject();
}
@Override
public void initializeFromJSON(Project project, JSONObject o) throws Exception {
_name = o.getString("name");
_columnName = o.getString("columnName");
Column column = project.columnModel.getColumnByName(_columnName);
_cellIndex = column != null ? column.getCellIndex() : -1;
if (!o.isNull("query")) {
_query = o.getString("query");
}
_mode = o.getString("mode");
_caseSensitive = o.getBoolean("caseSensitive");
if (_query != null) {
if ("regex".equals(_mode)) {
try {
_pattern = Pattern.compile(
_query,
_caseSensitive ? 0 : Pattern.CASE_INSENSITIVE);
} catch (java.util.regex.PatternSyntaxException e) {
e.printStackTrace();
}
} else if (!_caseSensitive) {
_query = _query.toLowerCase();
}
}
}
@Override
public RowFilter getRowFilter(Project project) {
if (_query == null || _query.length() == 0 || _cellIndex < 0) {
return null;
} else if ("regex".equals(_mode) && _pattern == null) {
return null;
}
Evaluable eval = new VariableExpr("value");
if ("regex".equals(_mode)) {
return new ExpressionStringComparisonRowFilter(eval, _columnName, _cellIndex) {
@Override
protected boolean checkValue(String s) {
return _pattern.matcher(s).find();
};
};
} else {
return new ExpressionStringComparisonRowFilter(eval, _columnName, _cellIndex) {
@Override
protected boolean checkValue(String s) {
return (_caseSensitive ? s : s.toLowerCase()).contains(_query);
};
};
}
}
@Override
public RecordFilter getRecordFilter(Project project) {
RowFilter rowFilter = getRowFilter(project);
return rowFilter == null ? null : new AnyRowRecordFilter(rowFilter);
}
@Override
public void computeChoices(Project project, FilteredRows filteredRows) {
// nothing to do
}
@Override
public void computeChoices(Project project, FilteredRecords filteredRecords) {
// nothing to do
}
}