Package com.sap.cds.adapter.odata.v2.utils

Class ETagHelper

java.lang.Object

com.sap.cds.adapter.odata.v2.utils.ETagHelper

public class ETagHelper
extends Object

Constructor Summary

Constructors

Constructor	Description
ETagHelper()

Method Summary

Modifier and Type	Method	Description
static boolean	checkReadPreconditions(String eTag, String ifMatchHeaders, String ifNoneMatchHeaders)
static String	getEtag(Map<String,Object> data, com.sap.cds.reflect.CdsEntity entity)
static Optional<com.sap.cds.reflect.CdsElement>	getETagElement(com.sap.cds.reflect.CdsEntity entity)
static Optional<com.sap.cds.reflect.CdsElement>	getETagElement(String entityName, com.sap.cds.reflect.CdsModel cdsModel)
static com.sap.cds.ql.cqn.CqnPredicate	getETagPredicate(CdsODataRequest request, com.sap.cds.reflect.CdsElement etagElement)
static boolean	hasIfNoneMatchHeaderWithAsteriskValue(CdsODataRequest request)
static boolean	isETagHeaderInRequest(CdsODataRequest odataRequest)

Methods inherited from class java.lang.Object

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

Constructor Details

ETagHelper

public ETagHelper()

Method Details

getETagElement

public static Optional<com.sap.cds.reflect.CdsElement> getETagElement(String entityName,
 com.sap.cds.reflect.CdsModel cdsModel)

getETagElement

public static Optional<com.sap.cds.reflect.CdsElement> getETagElement(com.sap.cds.reflect.CdsEntity entity)

isETagHeaderInRequest

public static boolean isETagHeaderInRequest(CdsODataRequest odataRequest)

hasIfNoneMatchHeaderWithAsteriskValue

public static boolean hasIfNoneMatchHeaderWithAsteriskValue(CdsODataRequest request)

getETagPredicate

public static com.sap.cds.ql.cqn.CqnPredicate getETagPredicate(CdsODataRequest request,
 com.sap.cds.reflect.CdsElement etagElement)

checkReadPreconditions

public static boolean checkReadPreconditions(String eTag,
 String ifMatchHeaders,
 String ifNoneMatchHeaders)
                                      throws ErrorStatusException

Throws:

ErrorStatusException

getEtag

public static String getEtag(Map<String,Object> data,
 com.sap.cds.reflect.CdsEntity entity)

Parameters:

data - the data

entity - the CdsEntity

Returns:

The etag value retrieved from data or null if no value could be retrieved or no etag is specified for the entity