fix: deserialization bug for Base64Url

datamodel/odata-v4/odata-v4-core/src/main/java/com/sap/cloud/sdk/datamodel/odatav4/adapter/ODataGenericConverter.java

@@ -53,7 +53,10 @@ final class ODataGenericConverter<JavaT> extends AbstractTypeConverter<JavaT, St
         new ODataGenericConverter<>(Duration.class, Duration::toString, Duration::parse);
 
     private static final ODataGenericConverter<byte[]> BINARY =
-        new ODataGenericConverter<>(byte[].class, Base64.getEncoder()::encodeToString, Base64.getDecoder()::decode);
+        new ODataGenericConverter<>(
+            byte[].class,
+            Base64.getEncoder()::encodeToString,
+            ODataGenericConverter::decodeBinary);
 
     private static final ODataGenericConverter<String> STRING =
         new ODataGenericConverter<>(String.class, Function.identity(), Function.identity());
@@ -73,6 +76,15 @@ final class ODataGenericConverter<JavaT> extends AbstractTypeConverter<JavaT, St
     private final Function<JavaT, String> serializer;
     private final Function<String, JavaT> deserializer;
 
+    @Nonnull
+    private static byte[] decodeBinary( @Nonnull final String value )
+    {
+        // Normalize URL-safe characters to standard Base64
+        final String normalized = value.replace('-', '+').replace('_', '/');
+
+        return Base64.getDecoder().decode(normalized);
+    }
+
     @Nonnull
     @Override
     public ConvertedObject<String> toDomainNonNull( @Nonnull final JavaT object )

datamodel/odata-v4/odata-v4-core/src/test/java/com/sap/cloud/sdk/datamodel/odatav4/core/FieldSerializationTest.java

@@ -8,6 +8,7 @@
 import java.time.LocalDate;
 import java.time.LocalTime;
 import java.time.OffsetDateTime;
+import java.util.Base64;
 import java.util.Map;
 import java.util.Objects;
 import java.util.UUID;
@@ -158,6 +159,15 @@ public static class ReferenceObject extends VdmEntity<ReferenceObject>
             "GeographyPoint":{"type":"Point","coordinates":[142.1,64.1]}\
             }\
             """;
+
+        private static final String PAYLOAD_ODATA_REFERENCE_BASE64URL =
+            PAYLOAD_ODATA_REFERENCE.replace("\"BinaryValue\":\"AQID\"", "\"BinaryValue\":\"-__v\"");
+
+        private static final String PAYLOAD_ODATA_REFERENCE_MIXED_BASE64_ALPHABET =
+            PAYLOAD_ODATA_REFERENCE.replace("\"BinaryValue\":\"AQID\"", "\"BinaryValue\":\"+__v\"");
+
+        static final String Base_64 = "+//v";
+        static final String Base_64_Url = "-__v";
     }
 
     @Test
@@ -174,6 +184,21 @@ void testBinaryFieldParsingFromResponsePayload()
         assertThat(ser).isEqualTo(ReferenceObject.PAYLOAD_ODATA_REFERENCE);
     }
 
+    @Test
+    void testBinaryFieldParsingFromBase64UrlResponsePayload()
+    {
+        final ODataRequestResultGeneric result = mockRequestResult(ReferenceObject.PAYLOAD_ODATA_REFERENCE_BASE64URL);
+        final ReferenceObject referenceResult = result.as(ReferenceObject.class);
+
+        Objects.requireNonNull(referenceResult);
+        assertThat(referenceResult.getBinaryValue())
+            .isEqualTo(Base64.getUrlDecoder().decode(ReferenceObject.Base_64_Url));
+
+        final String ser =
+            new CreateRequestBuilder<>("/", referenceResult, "EntityCollection").toRequest().getSerializedEntity();
+        assertThat(ser).contains("\"BinaryValue\":\"" + ReferenceObject.Base_64 + "\"");
+    }
+
     @Test
     void testCustomFieldParsingFromResponsePayload()
     {
@@ -186,6 +211,21 @@ void testCustomFieldParsingFromResponsePayload()
         assertThat(referenceResult.<Object> getCustomField("GeographyPoint")).isInstanceOf(Map.class);
     }
 
+    @Test
+    void testBinaryFieldParsingFromMixedBase64AlphabetNormalized()
+    {
+        final ODataRequestResultGeneric result =
+            mockRequestResult(ReferenceObject.PAYLOAD_ODATA_REFERENCE_MIXED_BASE64_ALPHABET);
+        final ReferenceObject referenceResult = result.as(ReferenceObject.class);
+
+        Objects.requireNonNull(referenceResult);
+        assertThat(referenceResult.getBinaryValue()).isEqualTo(Base64.getDecoder().decode(ReferenceObject.Base_64));
+
+        final String ser =
+            new CreateRequestBuilder<>("/", referenceResult, "EntityCollection").toRequest().getSerializedEntity();
+        assertThat(ser).contains("\"BinaryValue\":\"" + ReferenceObject.Base_64 + "\"");
+    }
+
     @SneakyThrows
     private static ODataRequestResultGeneric mockRequestResult( final String payload )
     {

release_notes.md

@@ -14,11 +14,12 @@
 ### ✨ New Functionality
 
 - [OpenAPI] Cloud SDK OpenAPI Generator now supports `apache-httpclient` library besides Spring RestTemplate through the newly introduced module `openapi-core-apache`.
+- [IAS] Add `IasOptions.withTokenFormat()` to allow specifying token format
 
 ### 📈 Improvements
 
 - 
 
 ### 🐛 Fixed Issues
 
-- 
+- [OData v4] Binary deserialization can now handle both `Base64URL` and `Base64`.