desktop/source/deployment/registry/inc/dp_backenddb.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_DESKTOP_SOURCE_DEPLOYMENT_REGISTRY_INC_DP_BACKENDDB_HXX
  21 #define INCLUDED_DESKTOP_SOURCE_DEPLOYMENT_REGISTRY_INC_DP_BACKENDDB_HXX
  22
  23 #include <rtl/ustring.hxx>
  24 #include <deque>
  25 #include <vector>
  26
  27 namespace com { namespace sun { namespace star {
  28         namespace uno {
  29         class XComponentContext;
  30         }
  31         namespace xml { namespace dom {
  32             class XDocument;
  33             class XNode;
  34         }}
  35         namespace xml { namespace xpath {
  36             class XXPathAPI;
  37         }}
  38 }}}
  39
  40 namespace dp_registry {
  41 namespace backend {
  42
  43 class BackendDb
  44 {
  45 private:
  46
  47     css::uno::Reference<css::xml::dom::XDocument> m_doc;
  48     css::uno::Reference<css::xml::xpath::XXPathAPI> m_xpathApi;
  49
  50     BackendDb(BackendDb const &) = delete;
  51     BackendDb &  operator = (BackendDb const &) = delete;
  52
  53 protected:
  54     const css::uno::Reference<css::uno::XComponentContext> m_xContext;
  55     OUString m_urlDb;
  56
  57 protected:
  58
  59     /* caller must make sure that only one thread accesses the function
  60      */
  61     css::uno::Reference<css::xml::dom::XDocument> const & getDocument();
  62
  63     /* the namespace prefix is "reg" (without quotes)
  64      */
  65     css::uno::Reference<css::xml::xpath::XXPathAPI> const & getXPathAPI();
  66     void save();
  67     void removeElement(OUString const & sXPathExpression);
  68
  69     css::uno::Reference<css::xml::dom::XNode> getKeyElement(
  70         OUString const & url);
  71
  72     void writeSimpleList(
  73         std::deque< OUString> const & list,
  74         OUString const & sListTagName,
  75         OUString const & sMemberTagName,
  76         css::uno::Reference<css::xml::dom::XNode> const & xParent);
  77
  78     void writeVectorOfPair(
  79         std::vector< std::pair< OUString, OUString > > const & vecPairs,
  80         OUString const & sVectorTagName,
  81         OUString const & sPairTagName,
  82         OUString const & sFirstTagName,
  83         OUString const & sSecondTagName,
  84         css::uno::Reference<css::xml::dom::XNode> const & xParent);
  85
  86     void writeSimpleElement(
  87         OUString const & sElementName, OUString const & value,
  88         css::uno::Reference<css::xml::dom::XNode> const & xParent);
  89
  90     css::uno::Reference<css::xml::dom::XNode> writeKeyElement(
  91         OUString const & url);
  92
  93     OUString readSimpleElement(
  94         OUString const & sElementName,
  95         css::uno::Reference<css::xml::dom::XNode> const & xParent);
  96
  97     std::vector< std::pair< OUString, OUString > >
  98     readVectorOfPair(
  99         css::uno::Reference<css::xml::dom::XNode> const & parent,
 100         OUString const & sListTagName,
 101         OUString const & sPairTagName,
 102         OUString const & sFirstTagName,
 103         OUString const & sSecondTagName);
 104
 105     std::deque< OUString> readList(
 106         css::uno::Reference<css::xml::dom::XNode> const & parent,
 107         OUString const & sListTagName,
 108         OUString const & sMemberTagName);
 109
 110     /* returns the values of one particularly child element of all key elements.
 111      */
 112     std::vector< OUString> getOneChildFromAllEntries(
 113         OUString const & sElementName);
 114
 115
 116     /*  returns the namespace which is to be written as xmlns attribute
 117         into the root element.
 118      */
 119     virtual OUString getDbNSName()=0;
 120     /* return the namespace prefix which is to be registered with the XPath API.
 121
 122        The prefix can then be used in XPath expressions.
 123     */
 124     virtual OUString getNSPrefix()=0;
 125     /* returns the name of the root element without any namespace prefix.
 126      */
 127     virtual OUString getRootElementName()=0;
 128     /* returns the name of xml element for each entry
 129      */
 130     virtual OUString getKeyElementName()=0;
 131
 132 public:
 133     BackendDb(css::uno::Reference<css::uno::XComponentContext> const &  xContext,
 134               OUString const & url);
 135     virtual ~BackendDb() {};
 136
 137     void removeEntry(OUString const & url);
 138
 139     /* This is called to write the "revoked" attribute to the entry.
 140        This is done when XPackage::revokePackage is called.
 141     */
 142     void revokeEntry(OUString const & url);
 143
 144     /* returns false if the entry does not exist yet.
 145      */
 146     bool activateEntry(OUString const & url);
 147
 148     bool hasActiveEntry(OUString const & url);
 149
 150 };
 151
 152 class RegisteredDb: public BackendDb
 153 {
 154
 155 public:
 156     RegisteredDb( css::uno::Reference<css::uno::XComponentContext> const &  xContext,
 157                   OUString const & url);
 158
 159
 160     void addEntry(OUString const & url);
 161 };
 162
 163 }
 164 }
 165 #endif
 166
 167 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */