opendaylight/netconf/netconf-netty-util/src/main/java/org/opendaylight/controller/netconf/nettyutil/handler/exi/EXIParameters.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.netconf.nettyutil.handler.exi;
   9
  10 import org.opendaylight.controller.netconf.util.xml.XmlElement;
  11 import org.openexi.proc.common.AlignmentType;
  12 import org.openexi.proc.common.EXIOptions;
  13 import org.openexi.proc.common.EXIOptionsException;
  14 import org.w3c.dom.Element;
  15 import org.w3c.dom.NodeList;
  16
  17 import com.google.common.base.Preconditions;
  18
  19 public final class EXIParameters {
  20     private static final String EXI_PARAMETER_ALIGNMENT = "alignment";
  21     static final String EXI_PARAMETER_BYTE_ALIGNED = "byte-aligned";
  22     static final String EXI_PARAMETER_BIT_PACKED = "bit-packed";
  23     static final String EXI_PARAMETER_COMPRESSED = "compressed";
  24     static final String EXI_PARAMETER_PRE_COMPRESSION = "pre-compression";
  25
  26     private static final String EXI_PARAMETER_FIDELITY = "fidelity";
  27     private static final String EXI_FIDELITY_DTD = "dtd";
  28     private static final String EXI_FIDELITY_LEXICAL_VALUES = "lexical-values";
  29     private static final String EXI_FIDELITY_COMMENTS = "comments";
  30     private static final String EXI_FIDELITY_PIS = "pis";
  31     private static final String EXI_FIDELITY_PREFIXES = "prefixes";
  32
  33     private final EXIOptions options;
  34
  35     private EXIParameters(final EXIOptions options) {
  36         this.options = Preconditions.checkNotNull(options);
  37     }
  38
  39
  40     public static EXIParameters fromXmlElement(final XmlElement root) throws EXIOptionsException {
  41         final EXIOptions options =  new EXIOptions();
  42
  43         options.setAlignmentType(AlignmentType.bitPacked);
  44
  45         final NodeList alignmentElements = root.getElementsByTagName(EXI_PARAMETER_ALIGNMENT);
  46         if (alignmentElements.getLength() > 0) {
  47             final Element alignmentElement = (Element) alignmentElements.item(0);
  48             final String alignmentTextContent = alignmentElement.getTextContent().trim();
  49
  50             switch (alignmentTextContent) {
  51             case EXI_PARAMETER_BIT_PACKED:
  52                 options.setAlignmentType(AlignmentType.bitPacked);
  53                 break;
  54             case EXI_PARAMETER_BYTE_ALIGNED:
  55                 options.setAlignmentType(AlignmentType.byteAligned);
  56                 break;
  57             case EXI_PARAMETER_COMPRESSED:
  58                 options.setAlignmentType(AlignmentType.compress);
  59                 break;
  60             case EXI_PARAMETER_PRE_COMPRESSION:
  61                 options.setAlignmentType(AlignmentType.preCompress);
  62                 break;
  63             }
  64         }
  65
  66         if (root.getElementsByTagName(EXI_PARAMETER_FIDELITY).getLength() > 0) {
  67             if (root.getElementsByTagName(EXI_FIDELITY_DTD).getLength() > 0) {
  68                 options.setPreserveDTD(true);
  69             }
  70             if (root.getElementsByTagName(EXI_FIDELITY_LEXICAL_VALUES).getLength() > 0) {
  71                 options.setPreserveLexicalValues(true);
  72             }
  73             if (root.getElementsByTagName(EXI_FIDELITY_COMMENTS).getLength() > 0) {
  74                 options.setPreserveComments(true);
  75             }
  76             if (root.getElementsByTagName(EXI_FIDELITY_PIS).getLength() > 0) {
  77                 options.setPreservePIs(true);
  78             }
  79             if (root.getElementsByTagName(EXI_FIDELITY_PREFIXES).getLength() > 0) {
  80                 options.setPreserveNS(true);
  81             }
  82         }
  83         return new EXIParameters(options);
  84     }
  85
  86     public final EXIOptions getOptions() {
  87         return options;
  88     }
  89 }