Vocabulary for describing configurations of the HeFQUIN engine

Class of configurations of the HeFQUIN engine. Instances of this class must have exactly one 'fedAccessMgr' property and one 'queryProcessor' property.

• federation access manager ^p
• query processor ^p

Every instance of this class represents a Java class that can be instantiated based on the given RDF description. Instances of this class must have exactly one 'javaClassName' property. Additionally, they may have a 'constructorArguments' property.

• name of Java class ^p
• constructor arguments ^p

• Instantiation-Based Constructor Argument ^c
• Federation Access Manager ^c
• Cost Model ^c
• Source Planner ^c
• Logical Optimizer ^c
• Physical Optimizer ^c
• Plan Compiler ^c
• Execution Engine ^c

This class is a superclass of any kind of argument to be passed to the constructor of a corresponding Java class. Concrete types of arguments are captured by the subclasses of this class.

• Instantiation-Based Constructor Argument ^c
• List-Based Constructor Argument ^c
• Value-Based Constructor Argument ^c

Every instance of this class represents a Java object that is obtained by instantiating a Java class and that is meant to be passed to a constructor in order to instantiate another Java class. In addition to the 'javaClassName' property and the (optional) 'constructorArguments' property, every instance of this class must have exactly one 'argumentTypeName' property. The value of this property is either the same as the value of the 'javaClassName' property or it is the name of a superclass or an interface of the class mentioned by the 'javaClassName' property.

• Constructor Argument ^c
• Instantiable Java Class ^c

Every instance of this class represents a 'java.util.List' that is populated and then passed as an argument to the constructor of a corresponding Java class. Instances of this class must have exactly one 'elementsTypeName' property and exactly one 'elements' property. Each element of the 'rdf:List' that the latter property refers to is expected to be of type 'InstantiableJavaClass' and the values of their respective 'javaClassName' properties are expected to be either the same as the value of the 'elementsTypeName' property (of this 'ListBasedConstructorArgument') or the name of a sub-class of the class mentioned by the 'elementsTypeName' property.

• name of Java class or a Java interface ^p
• list elements ^p

Every instance of this class refers to a concrete value to be passed as an argument to the constructor of a corresponding Java class. In particular, to refer to this value, instances of this class must have exactly one 'rdf:value' property. The value may be either a literal or any 'DesignatedArgumentValue' defined in this vocabulary.

The instances of this class that are defined in this vocabulary can be referred to as values by a 'ValueBasedConstructorArgument'.

• http://w3id.org/hefquin/engineconf#value:ExecServiceForFedAccess ⁿⁱ
• http://w3id.org/hefquin/engineconf#value:QueryProcContext ⁿⁱ
• http://w3id.org/hefquin/engineconf#value:CostModel ⁿⁱ

Instances of this class must have exactly one 'queryPlanner' property, one 'planCompiler' property, one 'executionEngine' property. Additionally, they may have a 'costModel' property.

• cost model ^p
• query planner ^p
• plan compiler ^p
• execution engine ^p

Instances of this class must have exactly one 'sourcePlanner' property, one 'logicalOptimizer' property, one 'physicalOptimizer' property.

• source planner ^p
• logical optimizer ^p
• physical optimizer ^p

Specifies the federation access manager to be used in a configuration of the HeFQUIN engine. Every such configuration has only one federation access manager.

Specifies the query processor to be used in a configuration of the HeFQUIN engine. Every such configuration has only one query processor.

Specifies the cost model to be used by the query processor. This property is optional because not all configurations of the HeFQUIN query processor use a cost model.

Specifies the query planner to be used by the query processor.

Specifies the plan compiler to be used by the query processor.

Specifies the execution engine to be used by the query processor.

Specifies the source planner to be used by the query planner.

Specifies the logical optimizer to be used by the query planner.

Specifies the physical optimizer to be used by the query planner.

Specifies the full name of a Java class.

Specifies the list of arguments that must be passed to the constructor of the Java class. Every element of this list is expected to be of type 'ConstructorArgument'.

Specifies the full name of a Java class or of a Java interface.

Specifies the full name of a Java class or of a Java interface.

Specifies the elements to be included in a list that is created as an argument for the constructor of a Java class. Every element of this list is expected to be of type 'InstantiableJavaClass'.