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 com.google.common.base.Preconditions;
  11 import org.opendaylight.controller.config.util.xml.XmlElement;
  12 import org.openexi.proc.common.AlignmentType;
  13 import org.openexi.proc.common.EXIOptions;
  14 import org.openexi.proc.common.EXIOptionsException;
  15 import org.w3c.dom.Element;
  16 import org.w3c.dom.NodeList;
  17
  18 public final class EXIParameters {
  19     private static final String EXI_PARAMETER_ALIGNMENT = "alignment";
  20     static final String EXI_PARAMETER_BYTE_ALIGNED = "byte-aligned";
  21     static final String EXI_PARAMETER_BIT_PACKED = "bit-packed";
  22     static final String EXI_PARAMETER_COMPRESSED = "compressed";
  23     static final String EXI_PARAMETER_PRE_COMPRESSION = "pre-compression";
  24
  25     private static final String EXI_PARAMETER_FIDELITY = "fidelity";
  26     private static final String EXI_FIDELITY_DTD = "dtd";
  27     private static final String EXI_FIDELITY_LEXICAL_VALUES = "lexical-values";
  28     private static final String EXI_FIDELITY_COMMENTS = "comments";
  29     private static final String EXI_FIDELITY_PIS = "pis";
  30     private static final String EXI_FIDELITY_PREFIXES = "prefixes";
  31
  32     private final EXIOptions options;
  33
  34     private EXIParameters(final EXIOptions options) {
  35         this.options = Preconditions.checkNotNull(options);
  36     }
  37
  38
  39     public static EXIParameters fromXmlElement(final XmlElement root) throws EXIOptionsException {
  40         final EXIOptions options =  new EXIOptions();
  41
  42         options.setAlignmentType(AlignmentType.bitPacked);
  43
  44         final NodeList alignmentElements = root.getElementsByTagName(EXI_PARAMETER_ALIGNMENT);
  45         if (alignmentElements.getLength() > 0) {
  46             final Element alignmentElement = (Element) alignmentElements.item(0);
  47             final String alignmentTextContent = alignmentElement.getTextContent().trim();
  48
  49             switch (alignmentTextContent) {
  50             case EXI_PARAMETER_BIT_PACKED:
  51                 options.setAlignmentType(AlignmentType.bitPacked);
  52                 break;
  53             case EXI_PARAMETER_BYTE_ALIGNED:
  54                 options.setAlignmentType(AlignmentType.byteAligned);
  55                 break;
  56             case EXI_PARAMETER_COMPRESSED:
  57                 options.setAlignmentType(AlignmentType.compress);
  58                 break;
  59             case EXI_PARAMETER_PRE_COMPRESSION:
  60                 options.setAlignmentType(AlignmentType.preCompress);
  61                 break;
  62             }
  63         }
  64
  65         if (root.getElementsByTagName(EXI_PARAMETER_FIDELITY).getLength() > 0) {
  66             if (root.getElementsByTagName(EXI_FIDELITY_DTD).getLength() > 0) {
  67                 options.setPreserveDTD(true);
  68             }
  69             if (root.getElementsByTagName(EXI_FIDELITY_LEXICAL_VALUES).getLength() > 0) {
  70                 options.setPreserveLexicalValues(true);
  71             }
  72             if (root.getElementsByTagName(EXI_FIDELITY_COMMENTS).getLength() > 0) {
  73                 options.setPreserveComments(true);
  74             }
  75             if (root.getElementsByTagName(EXI_FIDELITY_PIS).getLength() > 0) {
  76                 options.setPreservePIs(true);
  77             }
  78             if (root.getElementsByTagName(EXI_FIDELITY_PREFIXES).getLength() > 0) {
  79                 options.setPreserveNS(true);
  80             }
  81         }
  82         return new EXIParameters(options);
  83     }
  84
  85     public final EXIOptions getOptions() {
  86         return options;
  87     }
  88 }