com.sap.cloud.server.odata

Class QueryInternal

java.lang.Object

com.sap.cloud.server.odata.QueryInternal

public abstract class QueryInternal
extends java.lang.Object

For internal use only.

Constructor Summary

Constructors

Constructor and Description
QueryInternal()

Method Summary

Modifier and Type	Method and Description
static DataValue	applyFunction(QueryFunctionCall call, StructureBase context) Evaluate a query function call in the provided context.
static DataValue	applyOperator(QueryOperatorCall call, StructureBase context) Evaluate a query operator call in the provided context.
static DataValue	evaluate(DataValue value, StructureBase context) Evaluate a query expression value in the provided context.
static DataValue	evaluatePath(DataPath path, StructureBase context) Evaluate a data path in the provided context.
static StringValue	evaluateString(DataValue value, StructureBase context) Evaluate a string-typed query expression value in the provided context.
static void	getReferenced(StringSet properties, StringSet functions, StringSet operators, DataValue value) Collect the names of properties, functions and operators referenced by the value.
static boolean	immutableFilter(EntityType entityType, QueryFilter queryFilter)
static boolean	matchFilter(QueryFilter filter, StructureBase context) Return true if a query filter evaluates to true in the provided context.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryInternal

public QueryInternal()

Method Detail

applyFunction

public static DataValue applyFunction(QueryFunctionCall call,
                                      StructureBase context)

Evaluate a query function call in the provided context.

Parameters:

call - Query function call expression.

context - (nullable) Structure (ComplexValue or EntityValue) providing the evaluation context.

Returns:

(nullable) Function result.

applyOperator

public static DataValue applyOperator(QueryOperatorCall call,
                                      StructureBase context)

Evaluate a query operator call in the provided context.

Parameters:

call - Query operator call expression.

context - (nullable) Structure (ComplexValue or EntityValue) providing the evaluation context.

Returns:

(nullable) Operator result.

evaluate

public static DataValue evaluate(DataValue value,
                                 StructureBase context)

Evaluate a query expression value in the provided context.

Parameters:

value - (nullable) Query expression to be evaluated.

context - (nullable) Structure (ComplexValue or EntityValue) providing the evaluation context.

Returns:

(nullable) Evaluated expression.

evaluatePath

public static DataValue evaluatePath(DataPath path,
                                     StructureBase context)

Evaluate a data path in the provided context.

Parameters:

path - Data path.

context - (nullable) Structure (ComplexValue or EntityValue) providing the evaluation context.

Returns:

(nullable) Evaluated path.

evaluateString

public static StringValue evaluateString(DataValue value,
                                         StructureBase context)

Evaluate a string-typed query expression value in the provided context.

Parameters:

value - (nullable) Query expression to be evaluated.

context - (nullable) Structure (ComplexValue or EntityValue) providing the evaluation context.

Returns:

(nullable) Evaluated value, as type string.

getReferenced

public static void getReferenced(StringSet properties,
                                 StringSet functions,
                                 StringSet operators,
                                 DataValue value)

Collect the names of properties, functions and operators referenced by the value.

Parameters:

properties - Names of referenced properties (paths will appear as "X/Y").

functions - (nullable) To collect referenced functions (if this parameter is non-null).

functions - (nullable) To collect referenced operators (if this parameter is non-null).

value - (nullable) Value to search within for property/function/operator references.

immutableFilter

public static boolean immutableFilter(EntityType entityType,
                                      QueryFilter queryFilter)

matchFilter

public static boolean matchFilter(QueryFilter filter,
                                  StructureBase context)

Return true if a query filter evaluates to true in the provided context.

Parameters:

filter - (nullable) Query filter.

context - Structure (ComplexValue or EntityValue) providing the evaluation context.

Returns:

true if a query filter evaluates to true in the provided context.