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// **********************************************************************
//
// Copyright (c) 2003-2006 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************

#ifndef ICE_GRID_DESCRIPTOR_BUILDER_H
#define ICE_GRID_DESCRIPTOR_BUILDER_H

#include <Ice/Logger.h>
#include <IceXML/Parser.h>
#include <IceGrid/Descriptor.h>

namespace IceGrid
{

class XmlAttributesHelper
{
public:

    XmlAttributesHelper(const IceXML::Attributes&, const Ice::LoggerPtr&, const std::string&, int);

    void checkUnknownAttributes();
    bool contains(const std::string&) const;
    std::map<std::string, std::string> asMap() const;

    bool asBool(const std::string&) const;
    bool asBool(const std::string&, bool) const;

    std::string operator()(const std::string&) const;
    std::string operator()(const std::string&, const std::string&) const;

private:
    
    const IceXML::Attributes& _attributes;
    const Ice::LoggerPtr _logger;
    const std::string _filename;
    const int _line;

    mutable std::set<std::string> _used;
};

class PropertySetDescriptorBuilder;

class DescriptorBuilder
{
public:

    virtual ~DescriptorBuilder() {  }

    virtual void addVariable(const XmlAttributesHelper&);
};

class PropertySetDescriptorBuilder : DescriptorBuilder
{
public:
    
    PropertySetDescriptorBuilder();
    PropertySetDescriptorBuilder(const PropertySetDescriptor&);
    
    void setId(const std::string&);
    void setService(const std::string&);

    const std::string& getId() const;
    const std::string& getService() const;
    const PropertySetDescriptor& getDescriptor() const;
    
    void addProperty(const XmlAttributesHelper&);
    void addPropertySet(const XmlAttributesHelper&);
    bool finish();

private:

    std::string _id;
    std::string _service;
    PropertySetDescriptor _descriptor;
    bool _inPropertySetRef;
};

class NodeDescriptorBuilder;
class TemplateDescriptorBuilder;

class ApplicationDescriptorBuilder : public DescriptorBuilder
{
public:

    ApplicationDescriptorBuilder(const Ice::CommunicatorPtr&, const XmlAttributesHelper&,
    				 const std::map<std::string, std::string>&);
    ApplicationDescriptorBuilder(const Ice::CommunicatorPtr&, const ApplicationDescriptor&, const XmlAttributesHelper&,
				 const std::map<std::string, std::string>&);

    const ApplicationDescriptor& getDescriptor() const;

    void setVariableOverrides(const std::map<std::string, std::string>&);
    void setDescription(const std::string&);
    void addReplicaGroup(const XmlAttributesHelper&);
    void finishReplicaGroup();
    void setLoadBalancing(const XmlAttributesHelper&);
    void setReplicaGroupDescription(const std::string&);
    void addObject(const XmlAttributesHelper&);
    virtual void addVariable(const XmlAttributesHelper&);

    virtual NodeDescriptorBuilder* createNode(const XmlAttributesHelper&);
    virtual TemplateDescriptorBuilder* createServerTemplate(const XmlAttributesHelper&);
    virtual TemplateDescriptorBuilder* createServiceTemplate(const XmlAttributesHelper&);
    virtual PropertySetDescriptorBuilder* createPropertySet(const XmlAttributesHelper&) const;

    void addNode(const std::string&, const NodeDescriptor&);
    void addServerTemplate(const std::string&, const TemplateDescriptor&);
    void addServiceTemplate(const std::string&, const TemplateDescriptor&);
    void addPropertySet(const std::string&, const PropertySetDescriptor&);
    
    void addDistribution(const XmlAttributesHelper&);
    void addDistributionDirectory(const std::string&);

    bool isOverride(const std::string&);

    const Ice::CommunicatorPtr& getCommunicator() const { return _communicator; }

private:

    Ice::CommunicatorPtr _communicator;
    ApplicationDescriptor _descriptor;
    std::map<std::string, std::string> _overrides;
};

class ServerDescriptorBuilder;
class IceBoxDescriptorBuilder;

class ServerInstanceDescriptorBuilder : public DescriptorBuilder
{
public:

    ServerInstanceDescriptorBuilder(const XmlAttributesHelper&);
    const ServerInstanceDescriptor& getDescriptor() const { return _descriptor; }

    virtual PropertySetDescriptorBuilder* createPropertySet(const XmlAttributesHelper& attrs) const;
    virtual void addPropertySet(const std::string&, const PropertySetDescriptor&);
    
private:

    ServerInstanceDescriptor _descriptor;
};

class NodeDescriptorBuilder : public DescriptorBuilder
{
public:

    NodeDescriptorBuilder(ApplicationDescriptorBuilder&, const XmlAttributesHelper&);
    NodeDescriptorBuilder(ApplicationDescriptorBuilder&, const NodeDescriptor&, const XmlAttributesHelper&);

    virtual ServerDescriptorBuilder* createServer(const XmlAttributesHelper&);
    virtual ServerDescriptorBuilder* createIceBox(const XmlAttributesHelper&);
    virtual ServerInstanceDescriptorBuilder* createServerInstance(const XmlAttributesHelper&);
    virtual PropertySetDescriptorBuilder* createPropertySet(const XmlAttributesHelper&) const;

    void addVariable(const XmlAttributesHelper&);
    void addServer(const ServerDescriptorPtr&);
    void addServerInstance(const ServerInstanceDescriptor&);
    void addPropertySet(const std::string&, const PropertySetDescriptor&);
    void setDescription(const std::string&);

    const std::string& getName() const { return _name; }
    const NodeDescriptor& getDescriptor() const { return _descriptor; }

private:
    
    ApplicationDescriptorBuilder& _application;
    std::string _name;
    NodeDescriptor _descriptor;
};

class ServiceDescriptorBuilder;

class TemplateDescriptorBuilder : public DescriptorBuilder
{
public:

    TemplateDescriptorBuilder(ApplicationDescriptorBuilder&, const XmlAttributesHelper&, bool);

    virtual ServerDescriptorBuilder* createServer(const XmlAttributesHelper&);
    virtual ServerDescriptorBuilder* createIceBox(const XmlAttributesHelper&);    
    virtual ServiceDescriptorBuilder* createService(const XmlAttributesHelper&);    

    void addParameter(const XmlAttributesHelper&);
    void setDescriptor(const CommunicatorDescriptorPtr&);

    const std::string& getId() const { return _id; }
    const TemplateDescriptor& getDescriptor() const { return _descriptor; }

protected:

    ApplicationDescriptorBuilder& _application;
    const bool _serviceTemplate;
    const std::string _id;
    TemplateDescriptor _descriptor;
};

class CommunicatorDescriptorBuilder : public DescriptorBuilder
{
public:

    CommunicatorDescriptorBuilder(const Ice::CommunicatorPtr&);

    void init(const CommunicatorDescriptorPtr&, const XmlAttributesHelper&);
    virtual void finish();

    virtual void setDescription(const std::string&);
    virtual void addProperty(const XmlAttributesHelper&);
    virtual void addPropertySet(const PropertySetDescriptor&);
    virtual void addAdapter(const XmlAttributesHelper&);
    virtual void setAdapterDescription(const std::string&);
    virtual void addObject(const XmlAttributesHelper&);
    virtual void addAllocatable(const XmlAttributesHelper&);
    virtual void addDbEnv(const XmlAttributesHelper&);
    virtual void addDbEnvProperty(const XmlAttributesHelper&);
    virtual void setDbEnvDescription(const std::string&);
    virtual void addLog(const XmlAttributesHelper&);

    virtual PropertySetDescriptorBuilder* createPropertySet() const;

protected:

    void addProperty(PropertyDescriptorSeq&, const std::string&, const std::string&);

    PropertyDescriptorSeq _hiddenProperties;
    Ice::CommunicatorPtr _communicator;

private:

    CommunicatorDescriptorPtr _descriptor;
};

class ServiceInstanceDescriptorBuilder : public DescriptorBuilder
{
public:

    ServiceInstanceDescriptorBuilder(const XmlAttributesHelper&);
    const ServiceInstanceDescriptor& getDescriptor() const { return _descriptor; }
    
    virtual PropertySetDescriptorBuilder* createPropertySet() const;
    virtual void addPropertySet(const PropertySetDescriptor&);

private:

    ServiceInstanceDescriptor _descriptor;
};

class ServerDescriptorBuilder : public CommunicatorDescriptorBuilder
{
public:
    
    ServerDescriptorBuilder(const Ice::CommunicatorPtr&, const XmlAttributesHelper&);
    ServerDescriptorBuilder(const Ice::CommunicatorPtr&);

    void init(const ServerDescriptorPtr&, const XmlAttributesHelper&);

    virtual ServiceDescriptorBuilder* createService(const XmlAttributesHelper&);
    virtual ServiceInstanceDescriptorBuilder* createServiceInstance(const XmlAttributesHelper&);

    virtual void addOption(const std::string&);
    virtual void addEnv(const std::string&);
    virtual void addService(const ServiceDescriptorPtr&);
    virtual void addServiceInstance(const ServiceInstanceDescriptor&);
    virtual void addDistribution(const XmlAttributesHelper&);
    virtual void addDistributionDirectory(const std::string&);

    const ServerDescriptorPtr& getDescriptor() const { return _descriptor; } 

private:

    ServerDescriptorPtr _descriptor;
};

class IceBoxDescriptorBuilder : public ServerDescriptorBuilder
{
public:

    IceBoxDescriptorBuilder(const Ice::CommunicatorPtr&, const XmlAttributesHelper&);

    void init(const IceBoxDescriptorPtr&, const XmlAttributesHelper&);
    virtual void finish();

    virtual ServiceDescriptorBuilder* createService(const XmlAttributesHelper&);
    virtual ServiceInstanceDescriptorBuilder* createServiceInstance(const XmlAttributesHelper&);

    virtual void addAdapter(const XmlAttributesHelper&);
    virtual void addDbEnv(const XmlAttributesHelper&);
    virtual void addServiceInstance(const ServiceInstanceDescriptor&);
    virtual void addService(const ServiceDescriptorPtr&);

private:
    
    IceBoxDescriptorPtr _descriptor;
};

class ServiceDescriptorBuilder : public CommunicatorDescriptorBuilder
{
public:

    ServiceDescriptorBuilder(const Ice::CommunicatorPtr&, const XmlAttributesHelper&);
    void init(const ServiceDescriptorPtr&, const XmlAttributesHelper&);

    const ServiceDescriptorPtr& getDescriptor() const { return _descriptor; }
    
private:

    ServiceDescriptorPtr _descriptor;
};

};

#endif