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package com.codetaco.funnel.provider;

import java.io.IOException;
import java.io.InputStream;

import com.codetaco.funnel.parameters.FunnelContext;

/**
 * 
 * FixedLengthInputCache class.
 * 
 *
 * @author Chris DeGreef [email protected]
 */
public class FixedLengthInputCache extends AbstractInputCache
{
    /**
     * 
     * Constructor for FixedLengthInputCache.
     * 
     *
     * @param _context a {@link com.codetaco.funnel.parameters.FunnelContext}
     *            object.
     * @param _source a {@link java.io.InputStream} object.
     * @throws java.io.IOException if any.
     */
    public FixedLengthInputCache(final FunnelContext _context, final InputStream _source) throws IOException
    {
        super(_context, _source);
    }

    @Override
    void postOpenVerification() throws IOException
    {
        if (length() % context.getFixedRecordLengthIn() != 0)
            throw new IOException("file size ("
                    + length()
                    + ") not even multiple of record size ("
                    + context.getFixedRecordLengthIn()
                    + ")");
    }
}