public HeapIndexInput(HeapDirectory dir, HeapRamFile file) throws IOException {
this.bufferSize = dir.bufferSizeInBytes();
this.file = file;
length = file.length();
if (length / dir.bufferSizeInBytes() >= Integer.MAX_VALUE) {
throw new IOException("Too large RAMFile! " + length);
}
// make sure that we switch to the
// first needed buffer lazily
currentBufferIndex = -1;
currentBuffer = null;
}
