/*
* Copyright (C) 2010 Google Inc.
*
* Licensed 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 com.google.clearsilver.jsilver.data;
import com.google.clearsilver.jsilver.exceptions.JSilverBadSyntaxException;
import com.google.clearsilver.jsilver.resourceloader.ResourceLoader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.Reader;
/**
* Loads data in Hierarchical Data Format (HDF) into Data objects.
*/
public class HDFDataFactory implements DataFactory {
private final Parser hdfParser;
private final boolean ignoreAttributes;
public HDFDataFactory(boolean ignoreAttributes) {
this(ignoreAttributes, new NoOpStringInternStrategy());
}
public HDFDataFactory(boolean ignoreAttributes, StringInternStrategy stringInternStrategy) {
this(NewHdfParser.newFactory(stringInternStrategy), ignoreAttributes);
}
public HDFDataFactory(ParserFactory hdfParserFactory, boolean ignoreAttributes) {
this.ignoreAttributes = ignoreAttributes;
this.hdfParser = hdfParserFactory.newInstance();
}
@Override
public Data createData() {
return new DefaultData();
}
@Override
public void loadData(final String dataFileName, ResourceLoader resourceLoader, Data output)
throws JSilverBadSyntaxException, IOException {
Reader reader = resourceLoader.open(dataFileName);
if (reader == null) {
throw new FileNotFoundException(dataFileName);
}
try {
hdfParser.parse(reader, output, new Parser.ErrorHandler() {
public void error(int line, String lineContent, String fileName, String errorMessage) {
throw new JSilverBadSyntaxException("HDF parsing error : '" + errorMessage + "'",
lineContent, fileName, line, JSilverBadSyntaxException.UNKNOWN_POSITION, null);
}
}, resourceLoader, dataFileName, ignoreAttributes);
} finally {
resourceLoader.close(reader);
}
}
@Override
public Data loadData(String dataFileName, ResourceLoader resourceLoader) throws IOException {
Data result = createData();
loadData(dataFileName, resourceLoader, result);
return result;
}
@Override
public Parser getParser() {
return hdfParser;
}
}