How to use

getDefaultSequence

method

in

org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

/**
 * Get sequence corresponding to the name
 */
@Override
public Sequence getSequence(String seqName) {
  if (seqName == null) {
    return getDefaultSequence();
  } else {
    if (this.sequences != null) {
      return (Sequence)this.sequences.get(seqName);
    } else {
      return null;
    }
  }
}

/**
 * INTERNAL:
 * Used only for writing into XML or Java.
 */
@Override
public Sequence getDefaultSequenceToWrite() {
  if (usesPlatformDefaultSequence()) {
    return null;
  } else {
    return getDefaultSequence();
  }
}

/**
 *    Set the number of sequence values to preallocate.
 *    Preallocating sequence values can greatly improve insert performance.
 */
public void setSequencePreallocationSize(int size) {
  getDefaultSequence().setPreallocationSize(size);
}

/**
 * This method sets the update sequence number query.  It
 * allows for other queries to be used instead of the default one.
 */
public void setUpdateSequenceQuery(DataModifyQuery updateSequenceNumberQuery) {
  if (getDefaultSequence() instanceof QuerySequence) {
    ((QuerySequence)getDefaultSequence()).setUpdateQuery(updateSequenceNumberQuery);
  } else {
    throw ValidationException.wrongSequenceType(Helper.getShortClassName(getDefaultSequence()), "setUpdateQuery");
  }
}

/**
 * OBSOLETE:
 * This method lazy initializes the select sequence number query.  It
 * allows for other queries to be used instead of the default one.
 */
public ValueReadQuery getSelectSequenceQuery() {
  if (getDefaultSequence() instanceof QuerySequence) {
    return ((QuerySequence)getDefaultSequence()).getSelectQuery();
  } else {
    throw ValidationException.wrongSequenceType(Helper.getShortClassName(getDefaultSequence()), "getSelectQuery");
  }
}

/**
 * This method sets the update sequence number query.  It
 * allows for other queries to be used instead of the default one.
 */
public void setUpdateSequenceQuery(DataModifyQuery updateSequenceNumberQuery) {
  if (getDefaultSequence() instanceof QuerySequence) {
    ((QuerySequence)getDefaultSequence()).setUpdateQuery(updateSequenceNumberQuery);
  } else {
    throw ValidationException.wrongSequenceType(Helper.getShortClassName(getDefaultSequence()), "setUpdateQuery");
  }
}

/**
 * OBSOLETE:
 * This method lazy initializes the select sequence number query.  It
 * allows for other queries to be used instead of the default one.
 */
public ValueReadQuery getSelectSequenceQuery() {
  if (getDefaultSequence() instanceof QuerySequence) {
    return ((QuerySequence)getDefaultSequence()).getSelectQuery();
  } else {
    throw ValidationException.wrongSequenceType(Helper.getShortClassName(getDefaultSequence()), "getSelectQuery");
  }
}

/**
 * INTERNAL:
 * Used only for writing into XML or Java.
 */
public Sequence getDefaultSequenceToWrite() {
  if (usesPlatformDefaultSequence()) {
    return null;
  } else {
    return getDefaultSequence();
  }
}

/**
 * OBSOLETE:
 * This method lazy initializes the update sequence number query.  It
 * allows for other queries to be used instead of the default one.
 */
public DataModifyQuery getUpdateSequenceQuery() {
  if (getDefaultSequence() instanceof QuerySequence) {
    return ((QuerySequence)getDefaultSequence()).getUpdateQuery();
  } else {
    throw ValidationException.wrongSequenceType(Helper.getShortClassName(getDefaultSequence()), "getUpdateQuery");
  }
}

/**
 * OBSOLETE:
 * This method lazy initializes the select sequence number query.  It
 * allows for other queries to be used instead of the default one.
 */
public ValueReadQuery getSelectSequenceQuery() {
  if (getDefaultSequence() instanceof QuerySequence) {
    return ((QuerySequence)getDefaultSequence()).getSelectQuery();
  } else {
    throw ValidationException.wrongSequenceType(Helper.getShortClassName(getDefaultSequence()), "getSelectQuery");
  }
}

/**
 *    Set the number of sequence values to preallocate.
 *    Preallocating sequence values can greatly improve insert performance.
 */
public void setSequencePreallocationSize(int size) {
  getDefaultSequence().setPreallocationSize(size);
}

/**
 *    Set the number of sequence values to preallocate.
 *    Preallocating sequence values can greatly improve insert performance.
 */
public void setSequencePreallocationSize(int size) {
  getDefaultSequence().setPreallocationSize(size);
}

/**
 * This method sets the update sequence number query.  It
 * allows for other queries to be used instead of the default one.
 */
public void setUpdateSequenceQuery(DataModifyQuery updateSequenceNumberQuery) {
  if (getDefaultSequence() instanceof QuerySequence) {
    ((QuerySequence)getDefaultSequence()).setUpdateQuery(updateSequenceNumberQuery);
  } else {
    throw ValidationException.wrongSequenceType(Helper.getShortClassName(getDefaultSequence()), "setUpdateQuery");
  }
}

/**
 * OBSOLETE:
 * This method lazy initializes the update sequence number query.  It
 * allows for other queries to be used instead of the default one.
 */
public DataModifyQuery getUpdateSequenceQuery() {
  if (getDefaultSequence() instanceof QuerySequence) {
    return ((QuerySequence)getDefaultSequence()).getUpdateQuery();
  } else {
    throw ValidationException.wrongSequenceType(Helper.getShortClassName(getDefaultSequence()), "getUpdateQuery");
  }
}

/**
 * OBSOLETE:
 * This method lazy initializes the update sequence number query.  It
 * allows for other queries to be used instead of the default one.
 */
public DataModifyQuery getUpdateSequenceQuery() {
  if (getDefaultSequence() instanceof QuerySequence) {
    return ((QuerySequence)getDefaultSequence()).getUpdateQuery();
  } else {
    throw ValidationException.wrongSequenceType(Helper.getShortClassName(getDefaultSequence()), "getUpdateQuery");
  }
}

/**
 * INTERNAL:
 * Used only for writing into XML or Java.
 */
public Sequence getDefaultSequenceToWrite() {
  if (usesPlatformDefaultSequence()) {
    return null;
  } else {
    return getDefaultSequence();
  }
}

/**
 * OBSOLETE:
 * Can override the default query for returning the sequence numbers.
 * This query must be a valid query that has one parameter which is
 * the sequence name.
 */
public void setSelectSequenceNumberQuery(ValueReadQuery seqQuery) {
  if (getDefaultSequence() instanceof QuerySequence) {
    ((QuerySequence)getDefaultSequence()).setSelectQuery(seqQuery);
  } else {
    throw ValidationException.wrongSequenceType(Helper.getShortClassName(getDefaultSequence()), "setSelectQuery");
  }
}

/**
 * INTERNAL:
 * Indicates whether defaultSequence is the same as platform default sequence.
 */
public boolean usesPlatformDefaultSequence() {
  if (!hasDefaultSequence()) {
    return true;
  } else {
    return getDefaultSequence().equals(createPlatformDefaultSequence());
  }
}
 

/**
 * INTERNAL:
 * Indicates whether defaultSequence is the same as platform default sequence.
 */
@Override
public boolean usesPlatformDefaultSequence() {
  if (!hasDefaultSequence()) {
    return true;
  } else {
    return getDefaultSequence().equals(createPlatformDefaultSequence());
  }
}

/**
 * INTERNAL:
 * Indicates whether defaultSequence is the same as platform default sequence.
 */
public boolean usesPlatformDefaultSequence() {
  if (!hasDefaultSequence()) {
    return true;
  } else {
    return getDefaultSequence().equals(createPlatformDefaultSequence());
  }
}