SerializationNode¶
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class OpenMM::SerializationNode¶
A SerializationNode stores information about an object during serialization or deserialization.
When an object is serialized, its SerializationProxy is first called to copy information about the object into a SerializationNode. That information can then be written to the output stream in the desired format.
When an object is deserialized, the input stream is read and the information is stored into a SerializationNode. The appropriate SerializationProxy is then called to reconstruct the object.
SerializationNodes are arranged in a tree. There will often be a one-to-one correspondence between objects and SerializationNodes, but that need not always be true. A proxy is free to create whatever child nodes it wants and store information in them using whatever organization is most convenient.
Each SerializationNode can store an arbitrary set of “properties”, represented as key-value pairs. The key is always a string, while the value may be a string, an int, or a double. If a value is specified using one data type and then accessed as a different data type, the node will attempt to convert the value in an appropriate way. For example, it is always reasonable to call getStringProperty() to access a property as a string. Similarly, you can use setStringProperty() to specify a property and then access it using getIntProperty(). This will produce the expected result if the original value was, in fact, the string representation of an int, but if the original string was non-numeric, the result is undefined.
Public Functions
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const std::string &getName() const¶
Get the name of this SerializationNode.
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void setName(const std::string &name)¶
Set the name of this SerializationNode.
- Parameters
name – the new name of the SerializationNode
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const std::vector<SerializationNode> &getChildren() const¶
Get a reference to this node’s child nodes.
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std::vector<SerializationNode> &getChildren()¶
Get a reference to this node’s child nodes.
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const SerializationNode &getChildNode(const std::string &name) const¶
Get a reference to the child node with a particular name. If there is no child with the specified name, this throws an exception.
- Parameters
the – name of the child node to get
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SerializationNode &getChildNode(const std::string &name)¶
Get a reference to the child node with a particular name. If there is no child with the specified name, this throws an exception.
- Parameters
the – name of the child node to get
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const std::map<std::string, std::string> &getProperties() const¶
Get a map containing all of this node’s properties.
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bool hasProperty(const std::string &name) const¶
Determine whether this node has a property with a particular node.
- Parameters
name – the name of the property to check for
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const std::string &getStringProperty(const std::string &name) const¶
Get the property with a particular name, specified as a string. If there is no property with the specified name, an exception is thrown.
- Parameters
name – the name of the property to get
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const std::string &getStringProperty(const std::string &name, const std::string &defaultValue) const¶
Get the property with a particular name, specified as a string. If there is no property with the specified name, a default value is returned instead.
- Parameters
name – the name of the property to get
defaultValue – the value to return if the specified property does not exist
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SerializationNode &setStringProperty(const std::string &name, const std::string &value)¶
Set the value of a property, specified as a string.
- Parameters
name – the name of the property to set
value – the value to set for the property
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int getIntProperty(const std::string &name) const¶
Get the property with a particular name, specified as an int. If there is no property with the specified name, an exception is thrown.
- Parameters
name – the name of the property to get
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int getIntProperty(const std::string &name, int defaultValue) const¶
Get the property with a particular name, specified as an int. If there is no property with the specified name, a default value is returned instead.
- Parameters
name – the name of the property to get
defaultValue – the value to return if the specified property does not exist
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SerializationNode &setIntProperty(const std::string &name, int value)¶
Set the value of a property, specified as an int.
- Parameters
name – the name of the property to set
value – the value to set for the property
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bool getBoolProperty(const std::string &name) const¶
Get the property with a particular name, specified as an bool. If there is no property with the specified name, an exception is thrown.
- Parameters
name – the name of the property to get
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bool getBoolProperty(const std::string &name, bool defaultValue) const¶
Get the property with a particular name, specified as a bool. If there is no property with the specified name, a default value is returned instead.
- Parameters
name – the name of the property to get
defaultValue – the value to return if the specified property does not exist
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SerializationNode &setBoolProperty(const std::string &name, bool value)¶
Set the value of a property, specified as a bool.
- Parameters
name – the name of the property to set
value – the value to set for the property
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double getDoubleProperty(const std::string &name) const¶
Get the property with a particular name, specified as a double. If there is no property with the specified name, an exception is thrown.
- Parameters
name – the name of the property to get
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double getDoubleProperty(const std::string &name, double defaultValue) const¶
Get the property with a particular name, specified as a double. If there is no property with the specified name, a default value is returned instead.
- Parameters
name – the name of the property to get
defaultValue – the value to return if the specified property does not exist
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SerializationNode &setDoubleProperty(const std::string &name, double value)¶
Set the value of a property, specified as a double.
- Parameters
name – the name of the property to set
value – the value to set for the property
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SerializationNode &createChildNode(const std::string &name)¶
Create a new child node
- Parameters
name – the name of the new node to create
- Returns
a reference to the newly created node
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template<class T>
inline SerializationNode &createChildNode(const std::string &name, const T *object)¶ Create a new child node by serializing an object. A SerializationProxy is automatically selected based on the object’s type, then invoked to populate the newly created node.
Note that, while this method is templatized based on the type of object being serialized, the typeid() operator is used to select the proxy. This means the template argument may be a base class, and the correct proxies will still be selected for objects of different subclasses.
- Parameters
name – the name of the new node to create
object – a pointer to the object to serialize
- Returns
a reference to the newly created node
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template<class T>
inline T *decodeObject() const¶ Reconstruct an object based on the information stored in this node. A SerializationProxy is automatically selected based on the information stored in the node, then it is invoked to create the object.
The template parameter may be either the actual type of the object, or any base class to which it may be cast.
- Returns
a pointer to the newly created object. The caller assumes ownership of the object.
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const std::string &getName() const¶
