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package com.google.refine.importers.tree;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.refine.importers.ImporterUtilities;
import com.google.refine.model.Cell;
import com.google.refine.model.Column;
import com.google.refine.model.Project;
public abstract class TreeImportUtilities {
final static Logger logger = LoggerFactory.getLogger("TreeImportUtilities");
static protected void sortRecordElementCandidates(List<RecordElementCandidate> list) {
Collections.sort(list, new Comparator<RecordElementCandidate>() {
@Override
public int compare(RecordElementCandidate o1, RecordElementCandidate o2) {
return o2.count - o1.count;
}
});
}
static public void createColumnsFromImport(
Project project,
ImportColumnGroup columnGroup
) {
int startColumnIndex = project.columnModel.columns.size();
List<ImportColumn> columns = new ArrayList<ImportColumn>(columnGroup.columns.values());
Collections.sort(columns, new Comparator<ImportColumn>() {
@Override
public int compare(ImportColumn o1, ImportColumn o2) {
if (o1.blankOnFirstRow != o2.blankOnFirstRow) {
return o1.blankOnFirstRow ? 1 : -1;
}
int c = o2.nonBlankCount - o1.nonBlankCount;
return c != 0 ? c : (o1.name.length() - o2.name.length());
}
});
for (int i = 0; i < columns.size(); i++) {
ImportColumn c = columns.get(i);
Column column = new com.google.refine.model.Column(c.cellIndex, c.name);
project.columnModel.columns.add(column);
}
List<ImportColumnGroup> subgroups = new ArrayList<ImportColumnGroup>(columnGroup.subgroups.values());
Collections.sort(subgroups, new Comparator<ImportColumnGroup>() {
@Override
public int compare(ImportColumnGroup o1, ImportColumnGroup o2) {
// TODO: We really want the column/group with the highest % of
// records with at least one row populated, so popular optional
// elements with multiple instances per record don't
// outweigh mandatory elements with a single occurrence per record
// TODO: From a human factors point of view, we probably want
// to try to preserve the order that we found things in the XML
// Sort by most populated first, then shortest name
int c = o2.nonBlankCount - o1.nonBlankCount;
return c != 0 ? c : (o1.name.length() - o2.name.length());
}
});
for (ImportColumnGroup g : subgroups) {
createColumnsFromImport(project, g);
}
int endColumnIndex = project.columnModel.columns.size();
int span = endColumnIndex - startColumnIndex;
if (span > 1 && span < project.columnModel.columns.size()) {
// TODO: Only use "key column" if it's 100% populated?
project.columnModel.addColumnGroup(startColumnIndex, span, startColumnIndex);
}
}
@Deprecated
static protected void addCell(
Project project,
ImportColumnGroup columnGroup,
ImportRecord record,
String columnLocalName,
String text
) {
addCell(project, columnGroup, record, columnLocalName, text, true, true);
}
static protected void addCell(
Project project,
ImportColumnGroup columnGroup,
ImportRecord record,
String columnLocalName,
String text,
boolean storeEmptyString,
boolean guessDataType
) {
Serializable value = text;
if (!storeEmptyString && (text == null || (text).isEmpty())) {
return;
}
if (guessDataType) {
value = ImporterUtilities.parseCellValue(text);
}
addCell(project, columnGroup, record, columnLocalName, value);
}
protected static void addCell(Project project, ImportColumnGroup columnGroup, ImportRecord record,
String columnLocalName, Serializable value) {
ImportColumn column = getColumn(project, columnGroup, columnLocalName);
int cellIndex = column.cellIndex;
int rowIndex = Math.max(columnGroup.nextRowIndex, column.nextRowIndex);
while (rowIndex >= record.rows.size()) {
record.rows.add(new ArrayList<Cell>());
}
List<Cell> row = record.rows.get(rowIndex);
while (cellIndex >= row.size()) {
row.add(null);
}
row.set(cellIndex, new Cell(value, null));
column.nextRowIndex = rowIndex + 1;
column.nonBlankCount++; // TODO: Only increment for first instance in record?
}
static protected ImportColumn getColumn(
Project project,
ImportColumnGroup columnGroup,
String localName
) {
if (columnGroup.columns.containsKey(localName)) {
return columnGroup.columns.get(localName);
}
ImportColumn column = createColumn(project, columnGroup, localName);
columnGroup.columns.put(localName, column);
return column;
}
static protected ImportColumn createColumn(
Project project,
ImportColumnGroup columnGroup,
String localName
) {
ImportColumn newColumn = new ImportColumn();
newColumn.name = columnGroup.name.length() == 0 ?
(localName == null ? "Text" : localName) :
(localName == null ? columnGroup.name : (columnGroup.name + " - " + localName));
newColumn.cellIndex = project.columnModel.allocateNewCellIndex();
newColumn.nextRowIndex = columnGroup.nextRowIndex;
return newColumn;
}
static protected ImportColumnGroup getColumnGroup(
Project project,
ImportColumnGroup columnGroup,
String localName
) {
if (columnGroup.subgroups.containsKey(localName)) {
return columnGroup.subgroups.get(localName);
}
ImportColumnGroup subgroup = createColumnGroup(project, columnGroup, localName);
columnGroup.subgroups.put(localName, subgroup);
return subgroup;
}
static protected ImportColumnGroup createColumnGroup(
Project project,
ImportColumnGroup columnGroup,
String localName
) {
ImportColumnGroup newGroup = new ImportColumnGroup();
newGroup.name =
columnGroup.name.length() == 0 ?
(localName == null ? "Text" : localName) :
(localName == null ? columnGroup.name : (columnGroup.name + " - " + localName));
newGroup.nextRowIndex = columnGroup.nextRowIndex;
return newGroup;
}
}