How to use

beforeFirst

method

in

org.mulgara.resolver.spi.Statements

public void beforeFirst() throws TuplesException
{
 statements.beforeFirst();
}

public void beforeFirst(long[] prefix,
  int suffixTruncation) throws TuplesException {
 if (logger.isDebugEnabled()) {
  logger.debug("Resetting");
 }
 // Validate "prefix" parameter
 if (prefix == null) {
  throw new IllegalArgumentException("Null \"prefix\" parameter");
 }
 // Validate "suffixTruncation" parameter
 if (suffixTruncation != 0) {
  throw new IllegalArgumentException("Nonzero suffix truncationr");
 }
 // Reset fields
 statements.beforeFirst();
 this.prefix = prefix;
 if (logger.isDebugEnabled()) {
  logger.debug("Reset");
 }
}

/**
 * Calls before first and sets the prefix for the next call to next().
 *
 * @param prefix long[]
 * @param suffixTruncation int
 * @throws TuplesException
 */
public void beforeFirst(long[] prefix, int suffixTruncation) throws
  TuplesException {
 if (logger.isDebugEnabled()) {
  logger.debug("Resetting");
 }
 // Validate "prefix" parameter
 if (prefix == null) {
  throw new IllegalArgumentException("Null \"prefix\" parameter");
 }
 // Validate "suffixTruncation" parameter
 if (suffixTruncation != 0) {
  throw new IllegalArgumentException("Nonzero suffix truncation");
 }
 // Reset fields
 statements.beforeFirst();
 this.prefix = prefix;
 if (logger.isDebugEnabled()) {
  logger.debug("Reset");
 }
}