org.apache.metamodel.excel.XlsxWorkbookToTablesHandler Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.metamodel.excel;
import java.util.Map;
import org.apache.metamodel.schema.MutableSchema;
import org.apache.metamodel.schema.MutableTable;
import org.apache.metamodel.schema.Schema;
import org.apache.metamodel.schema.Table;
import org.apache.metamodel.schema.TableType;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
/**
* XML handler for transforming a workbook document into {@link Table}s in a
* MetaModel {@link Schema}.
*/
final class XlsxWorkbookToTablesHandler extends DefaultHandler {
private final MutableSchema _schema;
private final Map _tableNamesToRelationshipIds;
public XlsxWorkbookToTablesHandler(MutableSchema schema,
Map tableNamesToRelationshipIds) {
_schema = schema;
_tableNamesToRelationshipIds = tableNamesToRelationshipIds;
}
@Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
if ("sheet".equals(qName)) {
String name = attributes.getValue("name");
assert name != null;
String relationId = attributes.getValue("r:id");
assert relationId != null;
if (_schema != null) {
MutableTable table = new MutableTable(name, TableType.TABLE,
_schema);
_schema.addTable(table);
}
_tableNamesToRelationshipIds.put(name, relationId);
}
}
}