/*
* 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.mahout.classifier.sgd.bankmarketing;
import com.google.common.base.CharMatcher;
import com.google.common.base.Splitter;
import com.google.common.collect.AbstractIterator;
import com.google.common.io.Resources;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Iterator;
/** Parses semi-colon separated data as TelephoneCalls */
public class TelephoneCallParser implements Iterable<TelephoneCall> {
private final Splitter onSemi = Splitter.on(";").trimResults(CharMatcher.anyOf("\" ;"));
private String resourceName;
public TelephoneCallParser(String resourceName) throws IOException {
this.resourceName = resourceName;
}
@Override
public Iterator<TelephoneCall> iterator() {
try {
return new AbstractIterator<TelephoneCall>() {
BufferedReader input =
new BufferedReader(new InputStreamReader(Resources.getResource(resourceName).openStream()));
Iterable<String> fieldNames = onSemi.split(input.readLine());
@Override
protected TelephoneCall computeNext() {
try {
String line = input.readLine();
if (line == null) {
return endOfData();
}
return new TelephoneCall(fieldNames, onSemi.split(line));
} catch (IOException e) {
throw new RuntimeException("Error reading data", e);
}
}
};
} catch (IOException e) {
throw new RuntimeException("Error reading data", e);
}
}
}