/**
* INTERNAL Used by SQLCall.appendModify(..) If the field should be passed to
* customModifyInDatabaseCall, return true, otherwise false. Methods
* shouldCustomModifyInDatabaseCall and customModifyInDatabaseCall should be kept in sync:
* shouldCustomModifyInDatabaseCall should return true if and only if the field is handled by
* customModifyInDatabaseCall.
*/
public boolean shouldUseCustomModifyForCall(DatabaseField field) {
Class type = field.getType();
if ((type != null) && isOracle9Specific(type)) {
return true;
}
return super.shouldUseCustomModifyForCall(field);
}
/**
* INTERNAL: Used by SQLCall.translate(..) The binding *must* be performed (NCHAR, NSTRING,
* NCLOB). In these special cases the method returns a wrapper object which knows whether it
* should be bound or appended and knows how to do that.
*/
public Object getCustomModifyValueForCall(
Call call, Object value, DatabaseField field, boolean shouldBind) {
Class type = field.getType();
if ((type != null) && isOracle9Specific(type)) {
if (value == null) {
return null;
}
if (NCHAR.equals(type) || NSTRING.equals(type)) {
return new NTypeBindCallCustomParameter(value);
} else if (NCLOB.equals(type)) {
value = convertToDatabaseType(value);
if (shouldUseLocatorForLOBWrite()) {
if (lobValueExceedsLimit(value)) {
((DatabaseCall) call).addContext(field, value);
value = new String(" ");
}
}
return new NTypeBindCallCustomParameter(value);
} else if (XMLTYPE.equals(type)) {
return getXMLTypeFactory().createXMLTypeBindCallCustomParameter(value);
}
}
return super.getCustomModifyValueForCall(call, value, field, shouldBind);
}
/**
* INTERNAL: Build and return the nested rows from the specified field value. This method allows
* the field value to be an ARRAY containing other structures such as arrays or Struct, or direct
* values.
*/
public static Object buildContainerFromArray(
Array fieldValue, ObjectRelationalDatabaseField arrayField, AbstractSession session)
throws DatabaseException {
if (arrayField.getType() == null) {
return fieldValue;
}
Object[] objects = null;
try {
objects = (Object[]) fieldValue.getArray();
} catch (java.sql.SQLException ex) {
throw DatabaseException.sqlException(ex, session, false);
}
if (objects == null) {
return null;
}
boolean isNestedStructure = false;
ObjectRelationalDataTypeDescriptor ord = null;
DatabaseField nestedType = null;
if (arrayField != null) {
nestedType = arrayField.getNestedTypeField();
if ((nestedType != null) && nestedType.getSqlType() == Types.STRUCT) {
ClassDescriptor descriptor = session.getDescriptor(nestedType.getType());
if ((descriptor != null) && (descriptor.isObjectRelationalDataTypeDescriptor())) {
// this is used to convert non-null objects passed through stored procedures and custom
// SQL to structs
ord = (ObjectRelationalDataTypeDescriptor) descriptor;
}
} else if ((nestedType != null) && (nestedType instanceof ObjectRelationalDatabaseField)) {
isNestedStructure = true;
}
}
// handle ARRAY conversions
ReadObjectQuery query = new ReadObjectQuery();
query.setSession(session);
ContainerPolicy cp = ContainerPolicy.buildPolicyFor(arrayField.getType());
Object container = cp.containerInstance(objects.length);
for (int i = 0; i < objects.length; i++) {
Object arrayValue = objects[i];
if (arrayValue == null) {
return null;
}
if (ord != null) {
AbstractRecord nestedRow = ord.buildRowFromStructure((Struct) arrayValue);
ClassDescriptor descriptor = ord;
if (descriptor.hasInheritance()) {
Class newElementClass =
descriptor.getInheritancePolicy().classFromRow(nestedRow, session);
if (!descriptor.getJavaClass().equals(newElementClass)) {
descriptor = session.getDescriptor(newElementClass);
if (descriptor == null) {
descriptor = ord;
}
}
}
arrayValue = descriptor.getObjectBuilder().buildNewInstance();
descriptor
.getObjectBuilder()
.buildAttributesIntoObject(arrayValue, nestedRow, query, null, false);
} else if (isNestedStructure && (arrayValue instanceof Array)) {
arrayValue =
buildContainerFromArray(
(Array) arrayValue, (ObjectRelationalDatabaseField) nestedType, session);
}
cp.addInto(arrayValue, container, session);
}
return container;
}