## Uses of Class
org.apache.olingo.server.api.etag.PreconditionException

- Packages that use PreconditionException
  Package | Description
  --- | ---
  org.apache.olingo.server.api.etag | Olingo Server API - ETag The etag package is used to condense all about the Olingo ETag handling.

- - ### Uses of PreconditionException in org.apache.olingo.server.api.etag

    Methods in org.apache.olingo.server.api.etag that throw PreconditionException
    Modifier and Type | Method and Description
    --- | ---
    `void` | ETagHelper.`checkChangePreconditions(String eTag, Collection<String> ifMatchHeaders, Collection<String> ifNoneMatchHeaders)` Checks the preconditions of a change request (with HTTP methods PUT, PATCH, or DELETE) with a given ETag value against the If-Match and If-None-Match HTTP headers.
    `boolean` | ETagHelper.`checkReadPreconditions(String eTag, Collection<String> ifMatchHeaders, Collection<String> ifNoneMatchHeaders)` Checks the preconditions of a read request with a given ETag value against the If-Match and If-None-Match HTTP headers.

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