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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.cayenne.dba.oracle;
import org.apache.cayenne.access.DataNode;
import org.apache.cayenne.access.translator.select.QualifierTranslator;
import org.apache.cayenne.access.translator.select.QueryAssembler;
import org.apache.cayenne.access.translator.select.SelectTranslator;
import org.apache.cayenne.access.types.ExtendedType;
import org.apache.cayenne.access.types.ExtendedTypeFactory;
import org.apache.cayenne.access.types.ValueObjectTypeRegistry;
import org.apache.cayenne.configuration.Constants;
import org.apache.cayenne.configuration.RuntimeProperties;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.map.EntityResolver;
import org.apache.cayenne.query.Query;
import org.apache.cayenne.query.SQLAction;
import org.apache.cayenne.query.SelectQuery;
import org.apache.cayenne.resource.ResourceLocator;
import java.lang.reflect.Method;
import java.net.URL;
import java.util.List;
/**
* A flavor of OracleAdapter that implements workarounds for some old driver
* limitations.
*
* @since 1.2
*/
public class Oracle8Adapter extends OracleAdapter {
private static Method outputStreamFromBlobMethod;
private static Method writerFromClobMethod;
static {
initOracle8DriverInformation();
}
public Oracle8Adapter(@Inject RuntimeProperties runtimeProperties,
@Inject(Constants.SERVER_DEFAULT_TYPES_LIST) List<ExtendedType> defaultExtendedTypes,
@Inject(Constants.SERVER_USER_TYPES_LIST) List<ExtendedType> userExtendedTypes,
@Inject(Constants.SERVER_TYPE_FACTORIES_LIST) List<ExtendedTypeFactory> extendedTypeFactories,
@Inject(Constants.SERVER_RESOURCE_LOCATOR) ResourceLocator resourceLocator,
@Inject ValueObjectTypeRegistry valueObjectTypeRegistry) {
super(runtimeProperties, defaultExtendedTypes, userExtendedTypes, extendedTypeFactories, resourceLocator, valueObjectTypeRegistry);
}
private static void initOracle8DriverInformation() {
initDone = true;
// configure static information
try {
outputStreamFromBlobMethod = Class.forName("oracle.sql.BLOB").getMethod("getBinaryOutputStream");
writerFromClobMethod = Class.forName("oracle.sql.CLOB").getMethod("getCharacterOutputStream");
} catch (Throwable th) {
// ignoring...
}
}
static Method getWriterFromClobMethod() {
return writerFromClobMethod;
}
static Method getOutputStreamFromBlobMethod() {
return outputStreamFromBlobMethod;
}
/**
* @since 4.0
*/
@Override
public SelectTranslator getSelectTranslator(SelectQuery<?> query, EntityResolver entityResolver) {
return new Oracle8SelectTranslator(query, this, entityResolver);
}
/**
* Uses OracleActionBuilder to create the right action.
*/
@Override
public SQLAction getAction(Query query, DataNode node) {
return query.createSQLAction(new Oracle8ActionBuilder(node));
}
@Override
protected URL findResource(String name) {
if ("/types.xml".equals(name)) {
name = "/types-oracle8.xml";
}
return super.findResource(name);
}
@Override
public QualifierTranslator getQualifierTranslator(QueryAssembler queryAssembler) {
QualifierTranslator translator = new Oracle8QualifierTranslator(queryAssembler);
translator.setCaseInsensitive(caseInsensitiveCollations);
return translator;
}
}