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JdbcSqlScriptVerifier.java
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JdbcSqlScriptVerifier.java
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/*
* Copyright 2019 Google LLC
*
* Licensed 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 com.google.cloud.spanner.jdbc;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.startsWith;
import static org.hamcrest.MatcherAssert.assertThat;
import com.google.cloud.spanner.jdbc.StatementResult.ResultType;
import com.google.rpc.Code;
import java.sql.Array;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Timestamp;
import java.sql.Types;
import java.util.ArrayList;
import java.util.List;
/** SQL Script verifier for JDBC connections */
public class JdbcSqlScriptVerifier extends AbstractSqlScriptVerifier {
static class JdbcGenericStatementResult extends GenericStatementResult {
private final boolean result;
private final long updateCount;
private final ResultSet resultSet;
private JdbcGenericStatementResult(Statement statement, boolean result) throws SQLException {
this.result = result;
if (result) {
this.resultSet = statement.getResultSet();
this.updateCount = -1L;
} else {
this.resultSet = null;
this.updateCount = statement.getUpdateCount();
}
}
@Override
protected ResultType getResultType() {
if (result) {
return ResultType.RESULT_SET;
}
if (updateCount == -2L) {
return ResultType.NO_RESULT;
}
return ResultType.UPDATE_COUNT;
}
@Override
protected GenericResultSet getResultSet() {
return new JdbcGenericResultSet(resultSet);
}
@Override
protected long getUpdateCount() {
return updateCount;
}
}
static class JdbcGenericResultSet extends GenericResultSet {
private final ResultSet resultSet;
private JdbcGenericResultSet(ResultSet resultSet) {
this.resultSet = resultSet;
}
@Override
protected boolean next() throws SQLException {
return resultSet.next();
}
@Override
protected Object getValue(String col) throws SQLException {
Object value = resultSet.getObject(col);
if (value instanceof Timestamp) {
return com.google.cloud.Timestamp.of((Timestamp) value);
} else if (value instanceof Array) {
Array array = (Array) value;
switch (array.getBaseType()) {
case Types.BIGINT:
Long[] longs = (Long[]) array.getArray();
List<Long> res = new ArrayList<>();
for (Long l : longs) {
res.add(l);
}
return res;
default:
throw new IllegalArgumentException(
"Unsupported array base type: " + array.getBaseType());
}
}
return value;
}
@Override
protected int getColumnCount() throws Exception {
return resultSet.getMetaData().getColumnCount();
}
@Override
protected Object getFirstValue() throws Exception {
String col = resultSet.getMetaData().getColumnName(1);
return getValue(col);
}
}
public static class JdbcGenericConnection extends GenericConnection {
private final Connection connection;
/**
* Use this to strip comments from a statement before the statement is executed. This should
* only be used when the connection is used in a unit test with a mocked underlying connection.
*/
private boolean stripCommentsBeforeExecute;
public static JdbcGenericConnection of(Connection connection) {
return new JdbcGenericConnection(connection);
}
private JdbcGenericConnection(Connection connection) {
this.connection = connection;
}
@Override
protected GenericStatementResult execute(String sql) throws SQLException {
Statement statement = connection.createStatement();
if (isStripCommentsBeforeExecute()) {
sql = StatementParser.removeCommentsAndTrim(sql);
}
boolean result = statement.execute(sql);
return new JdbcGenericStatementResult(statement, result);
}
@Override
public void close() throws Exception {
if (this.connection != null) {
this.connection.close();
}
}
boolean isStripCommentsBeforeExecute() {
return stripCommentsBeforeExecute;
}
void setStripCommentsBeforeExecute(boolean stripCommentsBeforeExecute) {
this.stripCommentsBeforeExecute = stripCommentsBeforeExecute;
}
}
public JdbcSqlScriptVerifier() {}
public JdbcSqlScriptVerifier(GenericConnectionProvider connectionProvider) {
super(connectionProvider);
}
@Override
protected void verifyExpectedException(
String statement, Exception e, String code, String messagePrefix) {
assertThat(e instanceof JdbcSqlException, is(true));
JdbcSqlException jdbcException = (JdbcSqlException) e;
assertThat(statement, jdbcException.getCode(), is(equalTo(Code.valueOf(code))));
if (messagePrefix != null) {
assertThat(
statement,
e.getMessage(),
startsWith(messagePrefix.substring(1, messagePrefix.length() - 1)));
}
}
}