/*******************************************************************************
* Copyright 2013 EMBL-EBI
*
* 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 net.sf.cram.select;
import htsjdk.samtools.SAMFileHeader;
import htsjdk.samtools.SAMRecord;
import htsjdk.samtools.SAMRecordIterator;
class BoundSAMRecordIterator implements SAMRecordIterator {
private SAMRecordIterator delegate;
private long firstRecord = 0, lastRecord = Long.MAX_VALUE;
private long counter = 0;
public BoundSAMRecordIterator(SAMRecordIterator delegate, long firstRecord, long lastRecord) {
this.delegate = delegate;
this.firstRecord = firstRecord;
this.lastRecord = lastRecord;
}
@Override
public void close() {
delegate.close();
}
@Override
public boolean hasNext() {
while (delegate.hasNext() && counter < firstRecord) {
next();
}
return counter < lastRecord && delegate.hasNext();
}
@Override
public SAMRecord next() {
counter++;
return delegate.next();
}
@Override
public void remove() {
delegate.remove();
}
@Override
public SAMRecordIterator assertSorted(SAMFileHeader.SortOrder sortOrder) {
return delegate.assertSorted(sortOrder);
}
}
