/*_############################################################################
  _## 
  _##  SNMP4J-Agent 3 - MOTableSubIndex.java  
  _## 
  _##  Copyright (C) 2005-2025  Frank Fock (SNMP4J.org)
  _##  
  _##  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 org.snmp4j.agent.mo;

import org.snmp4j.smi.OID;
// JavaDoc
import org.snmp4j.smi.SMIConstants;


/**
 * The <code>MOTableSubIndex</code> class represents a sub-index definition.
 *
 * @author Frank Fock
 * @version 1.0
 */
public class MOTableSubIndex {

    private int smiSyntax;
    private int minLength = 1;
    private int maxLength = 1;
    private OID oid;

    /**
     * Creates a sub-index definition based on a SMI syntax.
     *
     * @param smiSyntax
     *         a SMI syntax ID as defined by {@link SMIConstants}.
     */
    public MOTableSubIndex(int smiSyntax) {
        this.smiSyntax = smiSyntax;
    }

    /**
     * Creates a sub-index definition based on a SMI syntax and the OID of the
     * sub-index OBJECT-TYPE definition.
     *
     * @param oid
     *         the OID of the sub-index definition's OBJECT-TYPE.
     * @param smiSyntax
     *         a SMI syntax ID as defined by {@link SMIConstants}.
     */
    public MOTableSubIndex(OID oid, int smiSyntax) {
        this(smiSyntax);
        this.oid = oid;
    }

    /**
     * Creates a sub-index definition based on a SMI syntax, minimum, and maximum
     * sub-index length.
     *
     * @param smiSyntax
     *         a SMI syntax ID as defined by {@link SMIConstants}.
     * @param minLength
     *         the minimum length of the sub-index (must not be greater than
     *         <code>maxLength</code>).
     * @param maxLength
     *         the maximum length of the sub-index (must not be less than
     *         <code>minLength</code>).
     */
    public MOTableSubIndex(int smiSyntax, int minLength, int maxLength) {
        this(smiSyntax);
        if (minLength > maxLength) {
            throw new IllegalArgumentException("MOTableIndex minLength > maxLength: " + minLength + ">" + maxLength);
        }
        this.minLength = minLength;
        this.maxLength = maxLength;
    }

    /**
     * Creates a sub-index definition based on a SMI syntax, minimum, and maximum
     * sub-index length as well as the OID of the sub-index OBJECT-TYPE.
     *
     * @param oid
     *         the OID of the sub-index definition's OBJECT-TYPE.
     * @param smiSyntax
     *         a SMI syntax ID as defined by {@link SMIConstants}.
     * @param minLength
     *         the minimum length of the sub-index (must not be greater than
     *         <code>maxLength</code>).
     * @param maxLength
     *         the maximum length of the sub-index (must not be less than
     *         <code>minLength</code>).
     */
    public MOTableSubIndex(OID oid, int smiSyntax, int minLength, int maxLength) {
        this(smiSyntax, minLength, maxLength);
        this.oid = oid;
    }

    /**
     * Gets the SMI syntax of the sub-index.
     *
     * @return a SMI syntax as defined by {@link SMIConstants}.
     */
    public int getSmiSyntax() {
        return smiSyntax;
    }

    /**
     * Returns the minimum sub-index length.
     *
     * @return the minimum length.
     */
    public int getMinLength() {
        return minLength;
    }

    /**
     * Returns the maximum sub-index length.
     *
     * @return the maximum length.
     */
    public int getMaxLength() {
        return maxLength;
    }

    /**
     * Returns the optional OID of the sub-index object definition.
     *
     * @return the OID of the sub-index object or <code>null</code> if that has not
     * been specified on sub-index creation.
     */
    public OID getOid() {
        return oid;
    }

    @Override
    public String toString() {
        return "MOTableSubIndex{" +
                "smiSyntax=" + smiSyntax +
                ", minLength=" + minLength +
                ", maxLength=" + maxLength +
                ", oid=" + oid +
                '}';
    }
}
