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#ifndef _QmfEngineSchemaImpl_
#define _QmfEngineSchemaImpl_
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include "qmf/engine/Schema.h"
#include <string.h>
#include <string>
#include <vector>
#include <exception>
namespace qmf {
namespace engine {
// TODO: Destructors for schema classes
// TODO: Add "frozen" attribute for schema classes so they can't be modified after
// they've been registered.
typedef qpid::messaging::VariantType Typecode;
class SchemaException : public std::exception {
public:
SchemaException(const std::string& context, const std::string& expected) {
text = context + ": Expected item with key " + expected;
}
virtual ~SchemaException() throw();
virtual const char* what() const throw() { return text.c_str(); }
private:
std::string text;
};
class SchemaHash {
uint8_t hash[16];
public:
SchemaHash();
void update(const char* data, uint32_t len);
void update(uint8_t data);
void update(const std::string& data) { update(data.c_str(), data.size()); }
void update(Direction d) { update((uint8_t) d); }
void update(Access a) { update((uint8_t) a); }
void update(Typecode a) { update((uint8_t) a); }
void update(bool b) { update((uint8_t) (b ? 1 : 0)); }
const uint8_t* get() const { return hash; }
void set(const uint8_t* val) { ::memcpy(hash, val, 16); }
bool operator==(const SchemaHash& other) const;
bool operator<(const SchemaHash& other) const;
bool operator>(const SchemaHash& other) const;
};
struct SchemaPropertyImpl {
std::string name;
Typecode typecode;
Access access;
bool index;
bool optional;
Direction dir;
std::string unit;
std::string description;
SchemaPropertyImpl(const char* n, Typecode t) :
name(n), typecode(t), access(ACCESS_READ_ONLY), index(false), optional(false), dir(DIR_IN) {}
SchemaPropertyImpl(const std::string& name, const qpid::messaging::Variant::Map& map);
static SchemaProperty* factory(const std::string& name, const qpid::messaging::Variant::Map& map);
qpid::messaging::Variant::Map asMap() const;
void setAccess(Access a) { access = a; }
void setIndex(bool val) { index = val; }
void setOptional(bool val) { optional = val; }
void setDirection(Direction d) { dir = d; }
void setUnit(const char* val) { unit = val; }
void setDesc(const char* desc) { description = desc; }
const std::string& getName() const { return name; }
Typecode getType() const { return typecode; }
Access getAccess() const { return access; }
bool isIndex() const { return index; }
bool isOptional() const { return optional; }
Direction getDirection() const { return dir; }
const std::string& getUnit() const { return unit; }
const std::string& getDesc() const { return description; }
void updateHash(SchemaHash& hash) const;
};
struct SchemaMethodImpl {
std::string name;
std::string description;
std::vector<const SchemaProperty*> properties;
SchemaMethodImpl(const char* n) : name(n) {}
SchemaMethodImpl(const std::string& name, const qpid::messaging::Variant::Map& map);
static SchemaMethod* factory(const std::string& name, const qpid::messaging::Variant::Map& map);
qpid::messaging::Variant::Map asMap() const;
void addProperty(const SchemaProperty* property);
void setDesc(const char* desc) { description = desc; }
const std::string& getName() const { return name; }
const std::string& getDesc() const { return description; }
int getPropertyCount() const { return properties.size(); }
const SchemaProperty* getProperty(int idx) const;
void updateHash(SchemaHash& hash) const;
};
struct SchemaClassKeyImpl {
ClassKind kind;
std::string package;
std::string name;
SchemaHash hash;
mutable std::string repr;
SchemaClassKeyImpl(ClassKind kind, const std::string& package, const std::string& name);
SchemaClassKeyImpl(const qpid::messaging::Variant::Map& map);
static SchemaClassKey* factory(ClassKind kind, const std::string& package, const std::string& name);
static SchemaClassKey* factory(const qpid::messaging::Variant::Map& map);
ClassKind getKind() const { return kind; }
const std::string& getPackageName() const { return package; }
const std::string& getClassName() const { return name; }
const uint8_t* getHashData() const { return hash.get(); }
SchemaHash& getHash() { return hash; }
qpid::messaging::Variant::Map asMap() const;
bool operator==(const SchemaClassKeyImpl& other) const;
bool operator<(const SchemaClassKeyImpl& other) const;
const std::string& str() const;
};
struct SchemaClassImpl {
mutable bool hasHash;
std::auto_ptr<SchemaClassKey> classKey;
std::vector<const SchemaProperty*> properties;
std::vector<const SchemaMethod*> methods;
SchemaClassImpl(ClassKind kind, const char* package, const char* name) :
hasHash(false), classKey(SchemaClassKeyImpl::factory(kind, package, name)) {}
SchemaClassImpl(const qpid::messaging::Variant::Map& map);
static SchemaClass* factory(const qpid::messaging::Variant::Map& map);
qpid::messaging::Variant::Map asMap() const;
void addProperty(const SchemaProperty* property);
void addMethod(const SchemaMethod* method);
const SchemaClassKey* getClassKey() const;
int getPropertyCount() const { return properties.size(); }
int getMethodCount() const { return methods.size(); }
const SchemaProperty* getProperty(int idx) const;
const SchemaMethod* getMethod(int idx) const;
};
}
}
#endif
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