cz.jirutka.rsql.parser.ast

Class RSQLNodesFactory

java.lang.Object

cz.jirutka.rsql.parser.ast.RSQLNodesFactory

public class RSQLNodesFactory
extends Object

Factory that creates Node instances for the parser.

If you want to define custom operators, then extend this class and override createComparisonNode() method.

Constructor Summary

Constructors

Constructor and Description
RSQLNodesFactory()

Method Summary

Modifier and Type	Method and Description
ComparisonNode	createComparisonNode(String operator, String selector, List<String> arguments) Creates a specific ComparisonNode instance for the specified operator and with the given selector and arguments.
ComparisonNode	createComparisonNode(String operator, String selector, String argument)
LogicalNode	createLogicalNode(LogicalOp operator, List<Node> children) Creates a specific LogicalNode instance for the specified operator and with the given children nodes.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RSQLNodesFactory

public RSQLNodesFactory()

Method Detail

createLogicalNode

public LogicalNode createLogicalNode(LogicalOp operator,
                                     List<Node> children)

Creates a specific LogicalNode instance for the specified operator and with the given children nodes.

Parameters:

operator - The logical operator to create a node for.

children - An arguments of the operation.

Returns:

A subclass of the LogicalNode according to the specified operator.

createComparisonNode

public ComparisonNode createComparisonNode(String operator,
                                           String selector,
                                           String argument)
                                    throws UnknownOperatorException

Throws:

UnknownOperatorException

See Also:

createComparisonNode(String, String, List)

createComparisonNode

public ComparisonNode createComparisonNode(String operator,
                                           String selector,
                                           List<String> arguments)
                                    throws UnknownOperatorException

Creates a specific ComparisonNode instance for the specified operator and with the given selector and arguments.

If you want to define a custom FIQL-like operators (i.e. =[a-z]*=, ex.: =foo=), then override this method, handle your custom operators at top and then call super to handle the built-in operators.

Parameters:

operator - The comparison operator to create a node for.

selector - The selector that specifies a left side of the comparison.

arguments - A list of arguments that specifies a right side of the comparison.

Returns:

A subclass of the ComparisonNode according to the specified operator.

Throws:

UnknownOperatorException