SaxAttributesImpl.java

/*
** Module   : SaxAttributesImpl
** Abstract : SAX attributes specific features implementation.
**
** Copyright (c) 2013-2022, Golden Code Development Corporation.
**
** -#- -I- --Date-- ---------------------------------------Description----------------------------------------
** 001 EVL 20130208 Created initial version. Implementation is limited to the stubs to get the
**                  converted java code compiled. 
** 002 CA  20130221 Added ADM-DATA and UNIQUE-ID support. 
** 003 EVK 20131001 Implement methods and class logic.
** 004 CA  20220222 Fixed insertAttribute, to process a qualified attribute name properly.
*/
/*
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU Affero General Public License as
** published by the Free Software Foundation, either version 3 of the
** License, or (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU Affero General Public License for more details.
**
** You may find a copy of the GNU Affero GPL version 3 at the following
** location: https://www.gnu.org/licenses/agpl-3.0.en.html
** 
** Additional terms under GNU Affero GPL version 3 section 7:
** 
**   Under Section 7 of the GNU Affero GPL version 3, the following additional
**   terms apply to the works covered under the License.  These additional terms
**   are non-permissive additional terms allowed under Section 7 of the GNU
**   Affero GPL version 3 and may not be removed by you.
** 
**   0. Attribution Requirement.
** 
**     You must preserve all legal notices or author attributions in the covered
**     work or Appropriate Legal Notices displayed by works containing the covered
**     work.  You may not remove from the covered work any author or developer
**     credit already included within the covered work.
** 
**   1. No License To Use Trademarks.
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**     This license does not grant any license or rights to use the trademarks
**     Golden Code, FWD, any Golden Code or FWD logo, or any other trademarks
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**     name Golden Code, FWD, or the names of any author or contributor, for
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*/

package com.goldencode.p2j.xml;

import com.goldencode.p2j.util.*;
import org.xml.sax.*;
import org.xml.sax.helpers.*;

/**
 * Interface describing SAX-Attributes specific features of the SAX objects.
 */
public class SaxAttributesImpl
extends SaxEntityImpl
implements SaxAttributes
{
   /** List of XML attributes.*/
   private final AttributesImpl attributes = new AttributesImpl();

   /**
    * Default constructor.
    */
   public SaxAttributesImpl()
   {
      // no-op
   }

   /**
    * Special constructor accepting a Attributes object.
    *
    * @param    attrs
    *           List of XML attributes.
    */
   SaxAttributesImpl(Attributes attrs)
   {
      attributes.setAttributes(attrs);
   }

   /**
    * Copies SAX attributes form source provided to the current SAX-Attributes object.
    *
    * @param    attrHandle
    *           The handle of the SAX-Attribute object to be used as source.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical copySaxAttributes(handle attrHandle)
   {
      if (!handle.isHandleTypeOf(attrHandle, SaxAttributes.class))
      {
         invalidArgumentError("COPY-SAX-ATTRIBUTES");
         return new logical(false);
      }

      Attributes attrs = ((SaxAttributesImpl)attrHandle.getResource()).attributes;

      attributes.setAttributes(attrs);

      return new logical(true);
   }

   /**
    * Gets the 1-based index of the attribute with given namespace name.
    *
    * @param    uri
    *           The namespace URI or empty string if none.
    * @param    localname
    *           The local(unqualified) name of the attribute.
    *
    * @return   The integer value of the given attribute index.
    */
   @Override
   public integer getIndexByNamespaceName(String uri, Text localname)
   {
      return getIndexByNamespaceName(new character(uri), localname);
   }
   
   /**
    * Gets the 1-based index of the attribute with given namespace name.
    *
    * @param    uri
    *           The namespace URI or empty string if none.
    * @param    localname
    *           The local(unqualified) name of the attribute.
    *
    * @return   The integer value of the given attribute index.
    */
   @Override
   public integer getIndexByNamespaceName(Text uri, Text localname)
   {
      if (!BaseDataType.elementsOfType(character.class, uri, localname))
      {
         invalidArgumentError("GET-INDEX-BY-NAMESPACE-NAME");
         return new integer();
      }
      if (localname.isUnknown())
      {
         invalidArgumentError("GET-INDEX-BY-NAMESPACE-NAME");
         return new integer();
      }

      String uriStr = uri.isUnknown() ? "" : uri.toStringMessage();
      String localName = localname.toStringMessage();

      int result = attributes.getIndex(uriStr, localName);
      if (result < 0)
      {
         return new integer();
      }
      return new integer(result + 1);
   }
   
   /**
    * Gets the 1-based index of the attribute with given namespace name.
    * 
    * @param    uri
    *           The namespace URI or empty string if none.
    * @param    localname
    *           The local(unqualified) name of the attribute.
    * 
    * @return   The integer value of the given attribute index.
    */
   @Override
   public integer getIndexByNamespaceName(Text uri, String localname)
   {
      return getIndexByNamespaceName(uri, new character(localname));
   }
   
   /**
    * Gets the 1-based index of the attribute with given namespace name.
    * 
    * @param    uri
    *           The namespace URI or empty string if none.
    * @param    localname
    *           The local(unqualified) name of the attribute.
    * 
    * @return   The integer value of the given attribute index.
    */
   @Override
   public integer getIndexByNamespaceName(String uri, String localname)
   {
      return getIndexByNamespaceName(new character(uri), new character(localname));
   }

   /**
    * Gets the 1-based index of the attribute with given XML qualified name.
    *
    * @param    qname
    *           The XML qualified name of the attribute to get the index.
    *
    * @return   The integer value of the given attribute index.
    */
   @Override
   public integer getIndexByQname(String qname)
   {
      return getIndexByQname(new character(qname));
   }
   
   /**
    * Gets the 1-based index of the attribute with given XML qualified name.
    *
    * @param    qname
    *           The XML qualified name of the attribute to get the index.
    *
    * @return   The integer value of the given attribute index.
    */
   @Override
   public integer getIndexByQname(Text qname)
   {
      if (!BaseDataType.elementsOfType(character.class, qname))
      {
         invalidArgumentError("GET-INDEX-BY-QNAME");
         return new integer();
      }

      if (qname.isUnknown())
      {
         invalidArgumentError("GET-INDEX-BY-QNAME");
         return new integer();
      }

      int result = attributes.getIndex(qname.toStringMessage());
      if (result < 0)
      {
         return new integer();
      }
      return new integer(result + 1);
   }

   /**
    * Gets the unqualified local name of the current attribute object by the given 1-based index.
    * 
    * @param    index
    *           The 1-based index of the attribute name to get.
    * 
    * @return   The character value of the attribute local name with given number.
    */
   @Override
   public character getLocalnameByIndex(double index)
   {
      return getLocalnameByIndex(new integer(index));
   }

   /**
    * Gets the unqualified local name of the current attribute object by the given 1-based index.
    * 
    * @param    index
    *           The 1-based index of the attribute name to get.
    * 
    * @return   The character value of the attribute local name with given number.
    */
   @Override
   public character getLocalnameByIndex(NumberType index)
   {
      if (index.isUnknown())
      {
         invalidArgumentError("GET-LOCALNAME-BY-INDEX");
         return new character();
      }

      return new character(attributes.getLocalName(index.intValue() - 1));
   }

   /**
    * Gets the numbers of the entries in the attributes object.
    *
    * @return   The integer value of the num-items attribute.
    */
   @Override
   public integer getNumItems()
   {
      return new integer(attributes.getLength());
   }

   /**
    * Gets the qualified name of the current attribute object by the given 1-based index.
    *
    * @param    index
    *           The 1-based index of the attribute name to get.
    *
    * @return   The character value of the attribute qualified name with given number.
    */
   @Override
   public character getQnameByIndex(double index)
   {
      return getQnameByIndex(new integer(index));
   }

   /**
    * Gets the qualified local name of the current attribute object by the given 1-based index.
    *
    * @param    index
    *           The 1-based index of the attribute name to get.
    *
    * @return   The character value of the attribute qualified name with given number.
    */
   @Override
   public character getQnameByIndex(NumberType index)
   {
      if (index.isUnknown())
      {
         invalidArgumentError("GET-QNAME-BY-INDEX");
         return new character();
      }

      return new character(attributes.getQName(index.intValue() - 1));
   }

   /**
    * Gets the type of the current attribute object by the given 1-based index.
    *
    * @param    index
    *           The 1-based index of the attribute type to get.
    *
    * @return   The character value of the attribute type with given number.
    */
   @Override
   public character getTypeByIndex(double index)
   {
      return getTypeByIndex(new integer(index));
   }

   /**
    * Gets the type of the current attribute object by the given 1-based index.
    *
    * @param    index
    *           The 1-based index of the attribute type to get.
    *
    * @return   The character value of the attribute type with given number.
    */
   @Override
   public character getTypeByIndex(NumberType index)
   {
      if (index.isUnknown())
      {
         invalidArgumentError("GET-TYPE-BY-INDEX");
         return new character();
      }

      return new character(attributes.getType(index.intValue() - 1));
   }
   
   /**
    * Gets the type of the attribute with given namespace name.
    * 
    * @param    uri
    *           The namespace URI or empty string if none.
    * @param    localname
    *           The local(unqualified) name of the attribute.
    * 
    * @return   The character value of the given attribute type.
    */
   @Override
   public character getTypeByNamespaceName(String uri, Text localname)
   {
      return getTypeByNamespaceName(new character(uri), localname);
   }
   
   /**
    * Gets the type of the attribute with given namespace name.
    *
    * @param    uri
    *           The namespace URI or empty string if none.
    * @param    localname
    *           The local(unqualified) name of the attribute.
    *
    * @return   The character value of the given attribute type.
    */
   @Override
   public character getTypeByNamespaceName(Text uri, Text localname)
   {
      if (!BaseDataType.elementsOfType(character.class, uri, localname))
      {
         invalidArgumentError("GET-TYPE-BY-NAMESPACE-NAME");
         return new character();
      }
      if (localname.isUnknown())
      {
         invalidArgumentError("GET-TYPE-BY-NAMESPACE-NAME");
         return new character();
      }

      String uriStr = uri.isUnknown() ? null : uri.toStringMessage();

      return new character(attributes.getType(uriStr, localname.toStringMessage()));
   }

   /**
    * Gets the type of the attribute with given namespace name.
    *
    * @param    uri
    *           The namespace URI or empty string if none.
    * @param    localname
    *           The local(unqualified) name of the attribute.
    *
    * @return   The character value of the given attribute type.
    */
   @Override
   public character getTypeByNamespaceName(Text uri, String localname)
   {
      return getTypeByNamespaceName(uri, new character(localname));
   }
   
   /**
    * Gets the type of the attribute with given namespace name.
    * 
    * @param    uri
    *           The namespace URI or empty string if none.
    * @param    localname
    *           The local(unqualified) name of the attribute.
    * 
    * @return   The character value of the given attribute type.
    */
   @Override
   public character getTypeByNamespaceName(String uri, String localname)
   {
      return getTypeByNamespaceName(new character(uri), new character(localname));
   }

   /**
    * Gets the type of the attribute with given XML qualified name.
    *
    * @param    qname
    *           The XML qualified name of the attribute to get the type.
    *
    * @return   The character value of the given attribute type.
    */
   @Override
   public character getTypeByQname(String qname)
   {
      return getTypeByQname(new character(qname));
   }
   
   /**
    * Gets the type of the attribute with given XML qualified name.
    *
    * @param    qname
    *           The XML qualified name of the attribute to get the type.
    *
    * @return   The character value of the given attribute type.
    */
   @Override
   public character getTypeByQname(character qname)
   {
      if (qname.isUnknown())
      {
         invalidArgumentError("GET-TYPE-BY-QNAME");
         return new character();
      }

      return new character(attributes.getType(qname.toStringMessage()));
   }

   /**
    * Gets the namespace URI of the current attribute object by the given 1-based index.
    *
    * @param    index
    *           The 1-based index of the namespace URI to get.
    *
    * @return   The character value of the namespace URI with given number.
    */
   @Override
   public character getUriByIndex(double index)
   {
      return getUriByIndex(new integer(index));
   }

   /**
    * Gets the namespace URI of the current attribute object by the given 1-based index.
    *
    * @param    index
    *           The 1-based index of the namespace URI to get.
    *
    * @return   The character value of the namespace URI with given number.
    */
   @Override
   public character getUriByIndex(NumberType index)
   {
      if (index.isUnknown())
      {
         invalidArgumentError("GET-URI-BY-INDEX");
         return new character();
      }

      return new character(attributes.getURI(index.intValue() - 1));
   }
   
   /**
    * Gets the value of the atribute with given index.
    *
    * @param    index
    *           The 1-based index of the attribute to get.
    *
    * @return   The character value of the attribute with given number.
    */
   @Override
   public character getValueByIndex(double index)
   {
      return getValueByIndex(new integer(index));
   }
   
   /**
    * Gets the value of the atribute with given index.
    *
    * @param    index
    *           The 1-based index of the attribute to get.
    *
    * @return   The character value of the attribute with given number.
    */
   @Override
   public character getValueByIndex(NumberType index)
   {
      if (index.isUnknown())
      {
         invalidArgumentError("GET-VALUE-BY-INDEX");
         return new character();
      }
      int number = index.intValue();

      if (number < 1 || number > attributes.getLength())
      {
         return new character();
      }

      return new character(attributes.getValue(number - 1));
   }
   
   /**
    * Gets the value of the attribute with given namespace name.
    *
    * @param    uri
    *           The namespace URI or empty string if none.
    * @param    localname
    *           The local(unqualified) name of the attribute.
    *
    * @return   The character value of the given attribute.
    */
   @Override
   public character getValueByNamespaceName(String uri, Text localname)
   {
      return getValueByNamespaceName(new character(uri), localname);
   }

   /**
    * Gets the value of the attribute with given namespace name.
    *
    * @param    uri
    *           The namespace URI or empty string if none.
    * @param    localname
    *           The local(unqualified) name of the attribute.
    *
    * @return   The character value of the given attribute.
    */
   @Override
   public character getValueByNamespaceName(Text uri, Text localname)
   {
      if (!BaseDataType.elementsOfType(character.class, uri, localname))
      {
         invalidArgumentError("GET-VALUE-BY-NAMESPACE-NAME");
         return new character();
      }

      if (localname.isUnknown())
      {
         invalidArgumentError("GET-VALUE-BY-NAMESPACE-NAME");
         return new character();
      }

      String uriStr = uri.isUnknown() ? "" : uri.toStringMessage();
      return new character(attributes.getValue(uriStr, localname.toStringMessage()));
   }
   
   /**
    * Gets the value of the attribute with given namespace name.
    *
    * @param    uri
    *           The namespace URI or empty string if none.
    * @param    localname
    *           The local(unqualified) name of the attribute.
    *
    * @return   The character value of the given attribute.
    */
   @Override
   public character getValueByNamespaceName(Text uri, String localname)
   {
      return getValueByNamespaceName(uri, new character(localname));
   }

   /**
    * Gets the value of the attribute with given namespace name.
    *
    * @param    uri
    *           The namespace URI or empty string if none.
    * @param    localname
    *           The local(unqualified) name of the attribute.
    *
    * @return   The character value of the given attribute.
    */
   @Override
   public character getValueByNamespaceName(String uri, String localname)
   {
      return getValueByNamespaceName(new character(uri), new character(localname));
   }

   /**
    * Gets the value of the attribute with given XML qualified name.
    *
    * @param    qname
    *           The XML qualified name of the attribute to get the value.
    *
    * @return   The character value of the given attribute.
    */
   @Override
   public character getValueByQname(String qname)
   {
      return getValueByQname(new character(qname));
   }

   /**
    * Gets the value of the attribute with given XML qualified name.
    *
    * @param    qname
    *           The XML qualified name of the attribute to get the value.
    *
    * @return   The character value of the given attribute.
    */
   @Override
   public character getValueByQname(character qname)
   {
      if (qname.isUnknown())
      {
         invalidArgumentError("GET-VALUE-BY-QNAME");
         return new character();
      }

      return new character(attributes.getValue(qname.toStringMessage()));
   }

   /**
    * Adding the single attribute to the start tag in the XML document if applied for SAX writer
    * object. For SAX attributes object inserts attribute and its name into SAX attributes object.
    *
    * @param    name
    *           The attribute name to insert.
    * @param    value
    *           The attribute value to insert.
    * @param    uri
    *           The URI of the attribute to insert or '?' for unknown value.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical insertAttribute(Text name, Text value, Text uri)
   {
      if (!BaseDataType.elementsOfType(character.class, uri, name, value))
      {
         invalidArgumentError("INSERT-ATTRIBUTE");
         return new logical(false);
      }
      if (name.isUnknown() || value.isUnknown())
      {
         invalidArgumentError("INSERT-ATTRIBUTE");
         return new logical(false);
      }
      String uriStr = uri.isUnknown() ? "" : uri.toStringMessage();
      String qname = name.toStringMessage();
      String localName = qname;
      int idx = localName.indexOf(':');
      if (idx >= 0)
      {
         localName = localName.substring(idx + 1);
      }
      attributes.addAttribute(uriStr, localName, qname, "CDATA", value.toStringMessage());

      return new logical(true);
   }

   /**
    * Removes the specified attribute.
    *
    * @param    name
    *           The name of the attribute to remove.
    * @param    uri
    *           The URI of the attribute to remove.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical removeAttribute(character name, character uri)
   {
      if (name.isUnknown())
      {
         invalidArgumentError("REMOVE-ATTRIBUTE");
         return new logical(false);
      }

      integer id = getIndexByNamespaceName(uri, name);
      if (id.isUnknown())
      {
         return new logical(false);
      }

      return removeAttribute(id, uri);
   }

   /**
    * Removes the specified attribute.
    *
    * @param    index
    *           The 1-based index of the attribute to remove.
    * @param    uri
    *           The URI of the attribute to remove.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical removeAttribute(NumberType index, character uri)
   {
      if (index.isUnknown())
      {
         invalidArgumentError("REMOVE-ATTRIBUTE");
         return new logical(false);
      }

      try
      {
         attributes.removeAttribute(index.intValue());
      }
      catch (ArrayIndexOutOfBoundsException ignored)
      {
         return new logical(false);
      }

      return new logical(true);
   }

   /**
    * Updates the specified attribute.
    *
    * @param    name
    *           The name of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(character name, character value)
   {
      return updateAttribute(name, new character(value), new character());
   }

   /**
    * Updates the specified attribute.
    *
    * @param    name
    *           The name of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(character name, character value, character uri)
   {
      if (name.isUnknown() || value.isUnknown())
      {
         invalidArgumentError("UPDATE-ATTRIBUTE");
         return new logical(false);
      }

      integer id = getIndexByNamespaceName(uri, name);
      if (id.isUnknown())
      {
         return new logical(false);
      }

      return updateAttribute(id, value, uri);
   }

   /**
    * Updates the specified attribute.
    *
    * @param    index
    *           The 1-based position index of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(NumberType index, character value, character uri)
   {
      if (index.isUnknown() || value.isUnknown())
      {
         invalidArgumentError("UPDATE-ATTRIBUTE");
         return new logical(false);
      }
      int indx = index.intValue() - 1;
      attributes.setAttribute(indx,
                              attributes.getURI(indx),
                              attributes.getLocalName(indx),
                              attributes.getQName(indx),
                              attributes.getType(indx),
                              value.toStringMessage());
      return new logical(true);
   }

   /**
    * Updates the specified attribute.
    *
    * @param    name
    *           The name of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(character name, String value)
   {
      return updateAttribute(name, new character(value), new character());
   }

   /**
    * Updates the specified attribute.
    *
    * @param    name
    *           The name of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(character name, String value, character uri)
   {
      return updateAttribute(name, new character(value), uri);
   }

   /**
    * Updates the specified attribute.
    *
    * @param    name
    *           The name of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(character name, character value, String uri)
   {
      return updateAttribute(name, value, new character(uri));
   }

   /**
    * Updates the specified attribute.
    *
    * @param    name
    *           The name of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(character name, String value, String uri)
   {
      return updateAttribute(name, new character(value), new character(uri));
   }

   /**
    * Updates the specified attribute.
    *
    * @param    name
    *           The name of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(String name, character value)
   {
      return updateAttribute(new character(name), new character(value), new character());
   }

   /**
    * Updates the specified attribute.
    *
    * @param    name
    *           The name of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(String name, String value)
   {
      return updateAttribute(new character(name), new character(value), new character());
   }

   /**
    * Updates the specified attribute.
    *
    * @param    name
    *           The name of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(String name, String value, character uri)
   {
      return updateAttribute(new character(name), new character(value), uri);
   }

   /**
    * Updates the specified attribute.
    *
    * @param    name
    *           The name of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(String name, character value, String uri)
   {
      return updateAttribute(new character(name), value, new character(uri));
   }

   /**
    * Updates the specified attribute.
    *
    * @param    name
    *           The name of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(String name, String value, String uri)
   {
      return updateAttribute(new character(name), new character(value),
                             new character(uri));
   }

   /**
    * Updates the specified attribute.
    *
    * @param    name
    *           The name of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(String name, character value, character uri)
   {
      return updateAttribute(new character(name), value, uri);
   }

   /**
    * Updates the specified attribute.
    *
    * @param    index
    *           The 1-based position index of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(NumberType index, character value)
   {
      return updateAttribute(index, new character(value), new character());
   }

   /**
    * Updates the specified attribute.
    *
    * @param    index
    *           The 1-based position index of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(NumberType index, String value)
   {
      return updateAttribute(index, new character(value), new character());
   }

   /**
    * Updates the specified attribute.
    *
    * @param    index
    *           The 1-based position index of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(NumberType index, String value, character uri)
   {
      return updateAttribute(index, new character(value), uri);
   }

   /**
    * Updates the specified attribute.
    *
    * @param    index
    *           The 1-based position index of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(NumberType index, character value, String uri)
   {
      return updateAttribute(index, value, new character(uri));
   }

   /**
    * Updates the specified attribute.
    *
    * @param    index
    *           The 1-based position index of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(NumberType index, String value, String uri)
   {
      return updateAttribute(index, new character(value), new character(uri));
   }

   /**
    * Updates the specified attribute.
    *
    * @param    index
    *           The 1-based position index of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(double index, character value)
   {
      return updateAttribute(new integer(index), new character(value), new character());
   }

   /**
    * Updates the specified attribute.
    *
    * @param    index
    *           The 1-based position index of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(double index, String value)
   {
      return updateAttribute(new integer(index), new character(value), new character());
   }

   /**
    * Updates the specified attribute.
    *
    * @param    index
    *           The 1-based position index of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(double index, String value, character uri)
   {
      return updateAttribute(new integer(index), new character(value), uri);
   }

   /**
    * Updates the specified attribute.
    *
    * @param    index
    *           The 1-based position index of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(double index, character value, String uri)
   {
      return updateAttribute(new integer(index), value, new character(uri));
   }

   /**
    * Updates the specified attribute.
    *
    * @param    index
    *           The 1-based position index of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(double index, String value, String uri)
   {
      return updateAttribute(new integer(index), new character(value),
                             new character(uri));
   }

   /**
    * Updates the specified attribute.
    *
    * @param    index
    *           The 1-based position index of the attribute to update.
    * @param    value
    *           The new value of the updated attribute.
    * @param    uri
    *           The URI of the attribute to update.
    *
    * @return   The <code>true</code> in case of success <code>false</code> otherwise.
    */
   @Override
   public logical updateAttribute(double index, character value, character uri)
   {
      return updateAttribute(new integer(index), value, uri);
   }

   /**
    * Getter for attributes.
    *
    * @return   attributes.
    */
   Attributes getAttributes()
   {
      return attributes;
   }

}