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BUG#: 5932
TITLE: Repository initialize optimization

DESCRIPTION: Fixes slow startup of server problem.

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#ifndef Pegasus_NameSpaceManager_h
#define Pegasus_NameSpaceManager_h

#include <Pegasus/Common/Config.h>
#include <Pegasus/Common/HashTable.h>
#include <Pegasus/Common/AutoPtr.h>
#include <Pegasus/Repository/InheritanceTree.h>
#include <Pegasus/Repository/Linkage.h>
#include <Pegasus/Common/MessageLoader.h>

PEGASUS_NAMESPACE_BEGIN

struct NameSpaceManagerRep;
class NameSpace;

enum NameSpaceIntendedOp
{
    NameSpaceRead,
    NameSpaceWrite,
    NameSpaceDelete
};

/** The NameSpaceManager class manages a collection of NameSpace objects.
*/
class PEGASUS_REPOSITORY_LINKAGE NameSpaceManager
{
    friend class NameSpace;
public:

    /** Constructor.
        @param repositoryRoot path to directory called "repository".
        @exception NoSuchDirectory if repositoryRoot not a valid directory.
    */
    NameSpaceManager(const String& repositoryRoot);

    /** Destructor.
    */
    ~NameSpaceManager();

    /** Determines whether the given namespace exists:
        @param nameSpaceName name of namespace.
        @return true if namespace eixsts; false otherwise.
    */
    Boolean nameSpaceExists(const CIMNamespaceName& nameSpaceName) const;

    typedef HashTable <String, String, EqualNoCaseFunc, HashLowerCaseFunc>
        NameSpaceAttributes;

    /** Creates the given namespace.
        @param nameSpaceName name of namespace to be created.
        @exception CIMException(CIM_ERR_ALREADY_EXISTS)
        @exception CannotCreateDirectory
    */
    void createNameSpace(const CIMNamespaceName& nameSpaceName,
         const NameSpaceAttributes& attributes);

    void modifyNameSpace(const CIMNamespaceName& nameSpaceName,
         const NameSpaceAttributes& attributes);

    /** Deletes the given namespace.
        @param nameSpaceName name of namespace to be deleted.
        @exception CIMException(CIM_ERR_INVALID_NAMESPACE)
        @exception NonEmptyNameSpace
        @exception FailedToRemoveDirectory
    */
    void deleteNameSpace(const CIMNamespaceName& nameSpaceName);

    Boolean isRemoteNameSpace(
        const CIMNamespaceName& nameSpaceName,
        String& remoteInfo);

    /** Gets array of all namespace names.
        @param nameSpaceNames filled with names of all namespaces.
    */
    void getNameSpaceNames(Array<CIMNamespaceName>& nameSpaceNames) const;

    Boolean getNameSpaceAttributes(
        const CIMNamespaceName& nameSpace,
        NameSpaceAttributes& attributes);

    /** Get path to the class file for the given class.
        @param nameSpaceName name of the namespace.
        @param className name of class.
        @exception CIMException(CIM_ERR_INVALID_NAMESPACE)
        @exception CIMException(CIM_ERR_INVALID_CLASS)
    */
    String getClassFilePath(
        NameSpace* nameSpace,
        const CIMName& className,
        NameSpaceIntendedOp op) const;

    String getClassFilePath(
        const CIMNamespaceName& nameSpaceName,
        const CIMName& className,
        NameSpaceIntendedOp op) const;

    /** Get path to the qualifier file for the given class.
        @param nameSpaceName name of the namespace.
        @param qualifierName name of qualifier.
        @exception CIMException(CIM_ERR_INVALID_NAMESPACE)
        @exception CIMException(CIM_ERR_NOT_FOUND)
    */
    String getQualifierFilePath(
        const CIMNamespaceName& nameSpaceName,
        const CIMName& qualifierName,
        NameSpaceIntendedOp op) const;

    String getInstanceDataFileBase(
        const CIMNamespaceName& nameSpaceName,
        const CIMName& className) const;

    String getInstanceDataFileBase(
        const NameSpace* nameSpace,
        const CIMName& className) const;

    /** Get path to the directory containing qualifiers:
        @param nameSpaceName name of the namespace.
    */
    String getQualifiersRoot(const CIMNamespaceName& nameSpaceName) const;

    /** Get path to the file containing association classes:
        @param nameSpaceName name of the namespace.
    */
    Array<String> getAssocClassPath(const CIMNamespaceName& nameSpaceName,
        NameSpaceIntendedOp op) const;

    /** Get path to the file containing association instances:
        @param nameSpaceName name of the namespace.
    */
    String getAssocInstPath(const CIMNamespaceName& nameSpaceName) const;

    /** Deletes the class file for the given class.
        @param nameSpaceName name of namespace.
        @param className name of class.
        @exception CIMException(CIM_ERR_INVALID_NAMESPACE)
        @exception CIMException(CIM_ERR_INVALID_CLASS)
        @exception CIMException(CIM_ERR_CLASS_HAS_CHILDREN)
    */
    void deleteClass(
        const CIMNamespaceName& nameSpaceName,
        const CIMName& className) const;

    /** Print out the namespaces. */
    void print(PEGASUS_STD(ostream)& os) const;

    /** Creates an entry for a new class.
        @param nameSpaceName namespace to contain class.
        @param className name of class
        @param superClassName name of superClassName
        @param classFilePath path of file to contain class itself.
    */
    void createClass(
        const CIMNamespaceName& nameSpaceName,
        const CIMName& className,
        const CIMName& superClassName,
        String& classFilePath);

    /** Checks if it is okay to modify this class.
        @param nameSpaceName namespace.
        @param className name of class being modified.
        @param superClassName superclass of class being modified.
        @param classFilePath full path to file containing class.
        @exception CIMException(CIM_ERR_INVALID_CLASS)
        @exception CIMException(CIM_ERR_FAILED) if there is an attempt
            to change the superclass of this class.
        @exception CIMException(CIM_ERR_CLASS_HAS_CHILDREN) if class
            has any children.
    */
    void checkModify(
        const CIMNamespaceName& nameSpaceName,
        const CIMName& className,
        const CIMName& superClassName,
        String& classFilePath);

    /** Get subclass names of the given class in the given namespace.
        @param nameSpaceName
        @param className - class whose subclass names will be gotten. If
            className is empty, all classnames are returned.
        @param deepInheritance - if true all descendent classes of class
            are returned. If className is empty, only root classes are returned.
        @param subClassNames - output argument to hold subclass names.
        @exception CIMException(CIM_ERR_INVALID_CLASS)
    */
    void getSubClassNames(
        const CIMNamespaceName& nameSpaceName,
        const CIMName& className,
        Boolean deepInheritance,
        Array<CIMName>& subClassNames,
        Boolean enm=false) const;

    /** Get the names of all superclasses (direct and indirect) of this
        class.
    */
    void getSuperClassNames(
        const CIMNamespaceName& nameSpaceName,
        const CIMName& className,
        Array<CIMName>& subClassNames) const;

    Boolean classHasInstances(
        NameSpace* nameSpace,
        const CIMName& className,
        Boolean throwExcp=false) const;

    Boolean classHasInstances(
        const CIMNamespaceName& nameSpaceName,
        const CIMName& className,
        Boolean throwExcp=false) const;

    Boolean classExists(
        NameSpace* nameSpace,
        const CIMName& className,
        Boolean throwExcp=false) const;

    Boolean classExists(
        const CIMNamespaceName& nameSpaceName,
        const CIMName& className) const;

    String getInstanceDirRoot(const CIMNamespaceName& nameSpaceName) const;

private:
    NameSpace* lookupNameSpace(String&);
    String _repositoryRoot;
    NameSpaceManagerRep* _rep;
};

/** This exception is thrown if one attempts to remove a namespace that still
    contains classes, instances, or qualifier.
*/
class PEGASUS_REPOSITORY_LINKAGE NonEmptyNameSpace : public Exception
{
public:
    NonEmptyNameSpace(const String& nameSpaceName)
    : Exception(MessageLoaderParms(
          "Repository.NameSpaceManager.ATTEMPT_DELETE_NONEMPTY_NAMESPACE",
          "Attempt to delete a non-empty namespace: $0", nameSpaceName))
    {
    }
};

PEGASUS_NAMESPACE_END

#endif /* Pegasus_NameSpaceManager_h */