@Override
public void readPrimitiveValue(
ODataRequest request, ODataResponse response, UriInfo uriInfo, ContentType format)
throws ODataApplicationException, SerializerException {
// First we have to figure out which entity set the requested entity is in
final EdmEntitySet edmEntitySet = getEdmEntitySet(uriInfo.asUriInfoResource());
// Next we fetch the requested entity from the database
final Entity entity;
try {
entity = readEntityInternal(uriInfo.asUriInfoResource(), edmEntitySet);
} catch (DataProviderException e) {
throw new ODataApplicationException(e.getMessage(), 500, Locale.ENGLISH);
}
if (entity == null) {
// If no entity was found for the given key we throw an exception.
throw new ODataApplicationException(
"No entity found for this key", HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
} else {
// Next we get the property value from the entity and pass the value to serialization
UriResourceProperty uriProperty =
(UriResourceProperty)
uriInfo.getUriResourceParts().get(uriInfo.getUriResourceParts().size() - 1);
EdmProperty edmProperty = uriProperty.getProperty();
Property property = entity.getProperty(edmProperty.getName());
if (property == null) {
throw new ODataApplicationException(
"No property found", HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
} else {
if (property.getValue() == null) {
response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
} else {
String value = String.valueOf(property.getValue());
ByteArrayInputStream serializerContent =
new ByteArrayInputStream(value.getBytes(Charset.forName("UTF-8")));
response.setContent(serializerContent);
response.setStatusCode(HttpStatusCode.OK.getStatusCode());
response.setHeader(HttpHeader.CONTENT_TYPE, ContentType.TEXT_PLAIN.toContentTypeString());
}
}
}
}
public static boolean entityMatchesAllKeys(
EdmEntityType edmEntityType, Entity rt_entity, List<UriParameter> keyParams) {
// loop over all keys
for (final UriParameter key : keyParams) {
// key
String keyName = key.getName();
String keyText = key.getText();
// note: below line doesn't consider: keyProp can be part of a complexType in V4
// in such case, it would be required to access it via getKeyPropertyRef()
// but since this isn't the case in our model, we ignore it in our implementation
EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
// Edm: we need this info for the comparison below
Boolean isNullable = edmKeyProperty.isNullable();
Integer maxLength = edmKeyProperty.getMaxLength();
Integer precision = edmKeyProperty.getPrecision();
Boolean isUnicode = edmKeyProperty.isUnicode();
Integer scale = edmKeyProperty.getScale();
// get the EdmType in order to compare
EdmType edmType = edmKeyProperty.getType();
// if(EdmType instanceof EdmPrimitiveType) // do we need this?
EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;
// Runtime data: the value of the current entity
// don't need to check for null, this is done in FWK
Object valueObject = rt_entity.getProperty(keyName).getValue();
// TODO if the property is a complex type
// now need to compare the valueObject with the keyText String
// this is done using the type.valueToString
String valueAsString = null;
try {
valueAsString =
edmPrimitiveType.valueToString(
valueObject, isNullable, maxLength, precision, scale, isUnicode);
} catch (EdmPrimitiveTypeException e) {
return false; // TODO proper Exception handling
}
if (valueAsString == null) {
return false;
}
boolean matches = valueAsString.equals(keyText);
// if any of the key properties is not found in the entity, we don't need to search further
if (!matches) {
return false;
}
// if the given key value is found in the current entity, continue with the next key
}
return true;
}
private void readProperty(
ODataResponse response, UriInfo uriInfo, ContentType contentType, boolean complex)
throws ODataApplicationException, SerializerException {
// To read a property we have to first get the entity out of the entity set
final EdmEntitySet edmEntitySet = getEdmEntitySet(uriInfo.asUriInfoResource());
Entity entity;
try {
entity = readEntityInternal(uriInfo.asUriInfoResource(), edmEntitySet);
} catch (DataProviderException e) {
throw new ODataApplicationException(
e.getMessage(), HttpStatusCode.INTERNAL_SERVER_ERROR.getStatusCode(), Locale.ENGLISH);
}
if (entity == null) {
// If no entity was found for the given key we throw an exception.
throw new ODataApplicationException(
"No entity found for this key", HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
} else {
// Next we get the property value from the entity and pass the value to serialization
UriResourceProperty uriProperty =
(UriResourceProperty)
uriInfo.getUriResourceParts().get(uriInfo.getUriResourceParts().size() - 1);
EdmProperty edmProperty = uriProperty.getProperty();
Property property = entity.getProperty(edmProperty.getName());
if (property == null) {
throw new ODataApplicationException(
"No property found", HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
} else {
if (property.getValue() == null) {
response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
} else {
ODataSerializer serializer = odata.createSerializer(contentType);
final ContextURL contextURL =
isODataMetadataNone(contentType)
? null
: getContextUrl(edmEntitySet, true, null, null, edmProperty.getName());
InputStream serializerContent =
complex
? serializer
.complex(
edm,
(EdmComplexType) edmProperty.getType(),
property,
ComplexSerializerOptions.with().contextURL(contextURL).build())
.getContent()
: serializer
.primitive(
edm,
(EdmPrimitiveType) edmProperty.getType(),
property,
PrimitiveSerializerOptions.with()
.contextURL(contextURL)
.scale(edmProperty.getScale())
.nullable(edmProperty.isNullable())
.precision(edmProperty.getPrecision())
.maxLength(edmProperty.getMaxLength())
.unicode(edmProperty.isUnicode())
.build())
.getContent();
response.setContent(serializerContent);
response.setStatusCode(HttpStatusCode.OK.getStatusCode());
response.setHeader(HttpHeader.CONTENT_TYPE, contentType.toContentTypeString());
}
}
}
}
private void appendProperties(final XMLStreamWriter writer, final EdmStructuredType type)
throws XMLStreamException {
List<String> propertyNames = new ArrayList<String>(type.getPropertyNames());
if (type.getBaseType() != null) {
propertyNames.removeAll(type.getBaseType().getPropertyNames());
}
for (String propertyName : propertyNames) {
EdmProperty property = type.getStructuralProperty(propertyName);
writer.writeEmptyElement(XML_PROPERTY);
writer.writeAttribute(XML_NAME, propertyName);
String fqnString;
if (property.isPrimitive()) {
fqnString = getFullQualifiedName(property.getType(), property.isCollection());
} else {
fqnString = getAliasedFullQualifiedName(property.getType(), property.isCollection());
}
writer.writeAttribute(XML_TYPE, fqnString);
// Facets
if (!property.isNullable()) {
writer.writeAttribute(XML_NULLABLE, "" + property.isNullable());
}
if (!property.isUnicode()) {
writer.writeAttribute(XML_UNICODE, "" + property.isUnicode());
}
if (property.getDefaultValue() != null) {
writer.writeAttribute(XML_DEFAULT_VALUE, property.getDefaultValue());
}
if (property.getMaxLength() != null) {
writer.writeAttribute(XML_MAX_LENGTH, "" + property.getMaxLength());
}
if (property.getPrecision() != null) {
writer.writeAttribute(XML_PRECISION, "" + property.getPrecision());
}
if (property.getScale() != null) {
writer.writeAttribute(XML_SCALE, "" + property.getScale());
}
}
}
