Package org.evomaster.client.java.controller.mongo.selectors

Class QuerySelector

java.lang.Object

org.evomaster.client.java.controller.mongo.selectors.QuerySelector

Direct Known Subclasses:

AllSelector, BitsAllClearSelector, BitsAllSetSelector, BitsAnyClearSelector, BitsAnySetSelector, ElemMatchSelector, EqualsSelector, ExistsSelector, GreaterThanEqualsSelector, GreaterThanSelector, ImplicitSelector, InSelector, LessThanEqualsSelector, LessThanSelector, ModSelector, MultiConditionQuerySelector, NearSphereSelector, NotEqualsSelector, NotInSelector, NotSelector, RegexSelector, SizeSelector, TypeSelector

public abstract class QuerySelector
extends Object

A selector is used to determine if a query correspond to a certain operation. To do so it checks that the syntax is correct (operator, value type, etc.). Each selector maps to a unique operation.

Constructor Summary

Constructors

Constructor	Description
QuerySelector()

Method Summary

Modifier and Type	Method	Description
protected abstract String	extractOperator(Object query)	Extracts the operator (for example $eq) from the query.
abstract QueryOperation	getOperation(Object query)	Returns the operation mapped to the selector if the query satisfy all syntax checks or null if not.
protected Boolean	hasTheExpectedOperator(Object query)	Determines if the given query has the expected operator associated with the selector.
protected Boolean	isUniqueEntry(Map<?,?> map)	Determines if the given map contains exactly one entry.
protected abstract String	operator()	The operator a query must have to be considered as an instance of the corresponding operation.

Methods inherited from class java.lang.Object

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

Constructor Details

QuerySelector

public QuerySelector()

Method Details

getOperation

public abstract QueryOperation getOperation(Object query)

Returns the operation mapped to the selector if the query satisfy all syntax checks or null if not.

isUniqueEntry

protected Boolean isUniqueEntry(Map<?,?> map)

Determines if the given map contains exactly one entry.

Parameters:

map - the map to be checked for uniqueness of entries; must not be null

Returns:

true if the map contains exactly one entry; false otherwise

hasTheExpectedOperator

protected Boolean hasTheExpectedOperator(Object query)

Determines if the given query has the expected operator associated with the selector.

Parameters:

query - the query object whose operator needs to be checked; must not be null

Returns:

true if the query contains the expected operator; false otherwise

extractOperator

protected abstract String extractOperator(Object query)

Extracts the operator (for example $eq) from the query.

operator

protected abstract String operator()

The operator a query must have to be considered as an instance of the corresponding operation.