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OPENJPA-317. Added ResultSetType and FetchDirection enums. Used FetchDirection instead of FetchDirectionType because FetchDirection seemed much more natural. 

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@567893 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Patrick Linskey 2007-08-21 01:09:20 +00:00
parent ede9dcbd61
commit e26e15496e
5 changed files with 177 additions and 20 deletions
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59
openjpa-persistence-jdbc/src/main/java/org/apache/openjpa/persistence/jdbc/FetchDirection.java Normal file
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@ -0,0 +1,59 @@
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* 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
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.openjpa.persistence.jdbc;
import java.sql.ResultSet;
/**
* The fetch direction to request when creating statements.
*
* @since 1.0.0
* @published
*/
public enum FetchDirection {
FORWARD(ResultSet.FETCH_FORWARD),
REVERSE(ResultSet.FETCH_REVERSE),
UNKNOWN(ResultSet.FETCH_UNKNOWN);
private final int resultSetConstant;
private FetchDirection(int value) {
resultSetConstant = value;
}
int toKernelConstant() {
return resultSetConstant;
}
static FetchDirection fromKernelConstant(int kernelConstant) {
switch (kernelConstant) {
case ResultSet.FETCH_FORWARD:
return FORWARD;
case ResultSet.FETCH_REVERSE:
return REVERSE;
case ResultSet.FETCH_UNKNOWN:
return UNKNOWN;
default:
throw new IllegalArgumentException(kernelConstant + "");
}
}
}

16
openjpa-persistence-jdbc/src/main/java/org/apache/openjpa/persistence/jdbc/JDBCFetchPlan.java
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@ -56,31 +56,23 @@ public interface JDBCFetchPlan
/**
* Type of JDBC result set to use for query results.
*
* @see java.sql.ResultSet
*/
public int getResultSetType();
public ResultSetType getResultSetType();
/**
* Type of JDBC result set to use for query results.
*
* @see java.sql.ResultSet
*/
public JDBCFetchPlan setResultSetType(int type);
public JDBCFetchPlan setResultSetType(ResultSetType type);
/**
* Result set fetch direction.
*
* @see java.sql.ResultSet
*/
public int getFetchDirection();
public FetchDirection getFetchDirection();
/**
* Result set fetch direction.
*
* @see java.sql.ResultSet
*/
public JDBCFetchPlan setFetchDirection(int direction);
public JDBCFetchPlan setFetchDirection(FetchDirection direction);
/**
* How to determine the size of a large result set.

16
openjpa-persistence-jdbc/src/main/java/org/apache/openjpa/persistence/jdbc/JDBCFetchPlanImpl.java
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@ -73,21 +73,21 @@ public class JDBCFetchPlanImpl
return this;
}
public int getResultSetType() {
return _fetch.getResultSetType();
public ResultSetType getResultSetType() {
return ResultSetType.fromKernelConstant(_fetch.getResultSetType());
}
public JDBCFetchPlanImpl setResultSetType(int type) {
_fetch.setResultSetType(type);
public JDBCFetchPlanImpl setResultSetType(ResultSetType type) {
_fetch.setResultSetType(type.toKernelConstant());
return this;
}
public int getFetchDirection() {
return _fetch.getFetchDirection();
public FetchDirection getFetchDirection() {
return FetchDirection.fromKernelConstant(_fetch.getFetchDirection());
}
public JDBCFetchPlanImpl setFetchDirection(int direction) {
_fetch.setFetchDirection(direction);
public JDBCFetchPlanImpl setFetchDirection(FetchDirection direction) {
_fetch.setFetchDirection(direction.toKernelConstant());
return this;
}

59
openjpa-persistence-jdbc/src/main/java/org/apache/openjpa/persistence/jdbc/ResultSetType.java Normal file
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@ -0,0 +1,59 @@
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* 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
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.openjpa.persistence.jdbc;
import java.sql.ResultSet;
/**
* Type of result set to use.
*
* @since 1.0.0
* @published
*/
public enum ResultSetType {
FORWARD_ONLY(ResultSet.TYPE_FORWARD_ONLY),
SCROLL_INSENSITIVE(ResultSet.TYPE_SCROLL_INSENSITIVE),
SCROLL_SENSITIVE(ResultSet.TYPE_SCROLL_SENSITIVE);
private final int resultSetConstant;
private ResultSetType(int value) {
resultSetConstant = value;
}
int toKernelConstant() {
return resultSetConstant;
}
static ResultSetType fromKernelConstant(int kernelConstant) {
switch (kernelConstant) {
case ResultSet.TYPE_FORWARD_ONLY:
return FORWARD_ONLY;
case ResultSet.TYPE_SCROLL_INSENSITIVE:
return SCROLL_INSENSITIVE;
case ResultSet.TYPE_SCROLL_SENSITIVE:
return SCROLL_SENSITIVE;
default:
throw new IllegalArgumentException(kernelConstant + "");
}
}
}

47
openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/jdbc/TestJDBCEnumToKernelConstantMappings.java
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@ -18,6 +18,8 @@
*/
package org.apache.openjpa.persistence.jdbc;
import java.sql.ResultSet;
import junit.framework.TestCase;
import org.apache.openjpa.jdbc.kernel.EagerFetchModes;
import org.apache.openjpa.jdbc.kernel.LRSSizes;
@ -113,6 +115,51 @@ public class TestJDBCEnumToKernelConstantMappings
JoinSyntaxType.values().length);
}
public void testResultSetType() {
assertEquals(ResultSet.TYPE_FORWARD_ONLY,
ResultSetType.FORWARD_ONLY.toKernelConstant());
assertEquals(ResultSetType.FORWARD_ONLY,
ResultSetType.fromKernelConstant(
ResultSet.TYPE_FORWARD_ONLY));
assertEquals(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSetType.SCROLL_INSENSITIVE.toKernelConstant());
assertEquals(ResultSetType.SCROLL_INSENSITIVE,
ResultSetType.fromKernelConstant(
ResultSet.TYPE_SCROLL_INSENSITIVE));
assertEquals(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSetType.SCROLL_SENSITIVE.toKernelConstant());
assertEquals(ResultSetType.SCROLL_SENSITIVE,
ResultSetType.fromKernelConstant(
ResultSet.TYPE_SCROLL_SENSITIVE));
assertEquals(3, ResultSetType.values().length);
}
public void testFetchDirection() {
assertEquals(ResultSet.FETCH_FORWARD,
FetchDirection.FORWARD.toKernelConstant());
assertEquals(FetchDirection.FORWARD,
FetchDirection.fromKernelConstant(
ResultSet.FETCH_FORWARD));
assertEquals(ResultSet.FETCH_REVERSE,
FetchDirection.REVERSE.toKernelConstant());
assertEquals(FetchDirection.REVERSE,
FetchDirection.fromKernelConstant(
ResultSet.FETCH_REVERSE));
assertEquals(ResultSet.FETCH_UNKNOWN,
FetchDirection.UNKNOWN.toKernelConstant());
assertEquals(FetchDirection.UNKNOWN,
FetchDirection.fromKernelConstant(
ResultSet.FETCH_UNKNOWN));
assertEquals(3, FetchDirection.values().length);
}
private int getConstantCount(Class cls) {
return cls.getDeclaredFields().length;
}