#436

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Build # #436

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github

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web-flow

Commit Message

Merge pull request #295 from hazendaz/develop

Run overall code cleanup using Eclipse

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/src/main/java/org/apache/ibatis/migration/operations/ScriptRunner.java

/*
 *    Copyright 2010-2023 the original author or authors.
 *
 *    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
 *
 *       https://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.ibatis.migration.operations;

import java.io.BufferedReader;
import java.io.PrintWriter;
import java.io.Reader;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.Statement;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author Clinton Begin
 */
public class ScriptRunner {

  private static final String LINE_SEPARATOR = System.lineSeparator();

  private static final String DEFAULT_DELIMITER = ";";

  private static final Pattern DELIMITER_PATTERN = Pattern
      .compile("^\\s*((--)|(//))?\\s*(//)?\\s*@DELIMITER\\s+([^\\s]+)", Pattern.CASE_INSENSITIVE);

  private final Connection connection;

  private boolean stopOnError;
  private boolean throwWarning;
  private boolean autoCommit;
  private boolean sendFullScript;
  private boolean removeCRs;
  private boolean escapeProcessing = true;

  private PrintWriter logWriter = new PrintWriter(System.out);
  private PrintWriter errorLogWriter = new PrintWriter(System.err);

  private String delimiter = DEFAULT_DELIMITER;
  private boolean fullLineDelimiter;

  public ScriptRunner(Connection connection) {
    this.connection = connection;
  }

  public void setStopOnError(boolean stopOnError) {
    this.stopOnError = stopOnError;
  }

  public void setThrowWarning(boolean throwWarning) {
    this.throwWarning = throwWarning;
  }

  public void setAutoCommit(boolean autoCommit) {
    this.autoCommit = autoCommit;
  }

  public void setSendFullScript(boolean sendFullScript) {
    this.sendFullScript = sendFullScript;
  }

  public void setRemoveCRs(boolean removeCRs) {
    this.removeCRs = removeCRs;
  }

  /**
   * Sets the escape processing.
   *
   * @param escapeProcessing
   *          the new escape processing
   *
   * @since 3.1.1
   */
  public void setEscapeProcessing(boolean escapeProcessing) {
    this.escapeProcessing = escapeProcessing;
  }

  public void setLogWriter(PrintWriter logWriter) {
    this.logWriter = logWriter;
  }

  public void setErrorLogWriter(PrintWriter errorLogWriter) {
    this.errorLogWriter = errorLogWriter;
  }

  public void setDelimiter(String delimiter) {
    this.delimiter = delimiter;
  }

  public void setFullLineDelimiter(boolean fullLineDelimiter) {
    this.fullLineDelimiter = fullLineDelimiter;
  }

  public void runScript(Reader reader) {
    setAutoCommit();

    try {
      if (sendFullScript) {
        executeFullScript(reader);
      } else {
        executeLineByLine(reader);
      }
    } finally {
      rollbackConnection();
    }
  }

  private void executeFullScript(Reader reader) {
    StringBuilder script = new StringBuilder();
    try {
      BufferedReader lineReader = new BufferedReader(reader);
      String line;
      while ((line = lineReader.readLine()) != null) {
        script.append(line);
        script.append(LINE_SEPARATOR);
      }
      String command = script.toString();
      println(command);
      executeStatement(command);
      commitConnection();
    } catch (Exception e) {
      String message = "Error executing: " + script + ".  Cause: " + e;
      printlnError(message);
      throw new RuntimeException(message, e);
    }
  }

  private void executeLineByLine(Reader reader) {
    StringBuilder command = new StringBuilder();
    try {
      BufferedReader lineReader = new BufferedReader(reader);
      String line;
      while ((line = lineReader.readLine()) != null) {
        handleLine(command, line);
      }
      commitConnection();
      checkForMissingLineTerminator(command);
    } catch (Exception e) {
      String message = "Error executing: " + command + ".  Cause: " + e;
      printlnError(message);
      throw new RuntimeException(message, e);
    }
  }

  /**
   * @deprecated Since 3.5.4, this method is deprecated. Please close the {@link Connection} outside of this class.
   */
  @Deprecated
  public void closeConnection() {
    try {
      connection.close();
    } catch (Exception e) {
      // ignore
    }
  }

  private void setAutoCommit() {
    try {
      if (autoCommit != connection.getAutoCommit()) {
        connection.setAutoCommit(autoCommit);
      }
    } catch (Throwable t) {
      throw new RuntimeException("Could not set AutoCommit to " + autoCommit + ". Cause: " + t, t);
    }
  }

  private void commitConnection() {
    try {
      if (!connection.getAutoCommit()) {
        connection.commit();
      }
    } catch (Throwable t) {
      throw new RuntimeException("Could not commit transaction. Cause: " + t, t);
    }
  }

  private void rollbackConnection() {
    try {
      if (!connection.getAutoCommit()) {
        connection.rollback();
      }
    } catch (Throwable t) {
      // ignore
    }
  }

  private void checkForMissingLineTerminator(StringBuilder command) {
    if (command != null && command.toString().trim().length() > 0) {
      throw new RuntimeException("Line missing end-of-line terminator (" + delimiter + ") => " + command);
    }
  }

  private void handleLine(StringBuilder command, String line) throws SQLException {
    String trimmedLine = line.trim();
    if (lineIsComment(trimmedLine)) {
      Matcher matcher = DELIMITER_PATTERN.matcher(trimmedLine);
      if (matcher.find()) {
        delimiter = matcher.group(5);
      }
      println(trimmedLine);
    } else if (commandReadyToExecute(trimmedLine)) {
      command.append(line, 0, line.lastIndexOf(delimiter));
      command.append(LINE_SEPARATOR);
      println(command);
      executeStatement(command.toString());
      command.setLength(0);
    } else if (trimmedLine.length() > 0) {
      command.append(line);
      command.append(LINE_SEPARATOR);
    }
  }

  private boolean lineIsComment(String trimmedLine) {
    return trimmedLine.startsWith("//") || trimmedLine.startsWith("--");
  }

  private boolean commandReadyToExecute(String trimmedLine) {
    // issue #561 remove anything after the delimiter
    return !fullLineDelimiter && trimmedLine.contains(delimiter) || fullLineDelimiter && trimmedLine.equals(delimiter);
  }

  private void executeStatement(String command) throws SQLException {
    Statement statement = connection.createStatement();
    try {
      statement.setEscapeProcessing(escapeProcessing);
      String sql = command;
      if (removeCRs) {
        sql = sql.replace("\r\n", "\n");
      }
      try {
        boolean hasResults = statement.execute(sql);
        while (hasResults || statement.getUpdateCount() != -1) {
          checkWarnings(statement);
          printResults(statement, hasResults);
          hasResults = statement.getMoreResults();
        }
      } catch (SQLWarning e) {
        throw e;
      } catch (SQLException e) {
        if (stopOnError) {
          throw e;
        }
        String message = "Error executing: " + command + ".  Cause: " + e;
        printlnError(message);
      }
    } finally {
      try {
        statement.close();
      } catch (Exception ignored) {
        // Ignore to workaround a bug in some connection pools
        // (Does anyone know the details of the bug?)
      }
    }
  }

  private void checkWarnings(Statement statement) throws SQLException {
    if (!throwWarning) {
      return;
    }
    // In Oracle, CREATE PROCEDURE, FUNCTION, etc. returns warning
    // instead of throwing exception if there is compilation error.
    SQLWarning warning = statement.getWarnings();
    if (warning != null) {
      throw warning;
    }
  }

  private void printResults(Statement statement, boolean hasResults) {
    if (!hasResults) {
      return;
    }
    try (ResultSet rs = statement.getResultSet()) {
      ResultSetMetaData md = rs.getMetaData();
      int cols = md.getColumnCount();
      for (int i = 0; i < cols; i++) {
        String name = md.getColumnLabel(i + 1);
        print(name + "\t");
      }
      println("");
      while (rs.next()) {
        for (int i = 0; i < cols; i++) {
          String value = rs.getString(i + 1);
          print(value + "\t");
        }
        println("");
      }
    } catch (SQLException e) {
      printlnError("Error printing results: " + e.getMessage());
    }
  }

  private void print(Object o) {
    if (logWriter != null) {
      logWriter.print(o);
      logWriter.flush();
    }
  }

  private void println(Object o) {
    if (logWriter != null) {
      logWriter.println(o);
      logWriter.flush();
    }
  }

  private void printlnError(Object o) {
    if (errorLogWriter != null) {
      errorLogWriter.println(o);
      errorLogWriter.flush();
    }
  }

}

1	/*
2	* Copyright 2010-2023 the original author or authors.
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* https://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16	package org.apache.ibatis.migration.operations;
17
18	import java.io.BufferedReader;
19	import java.io.PrintWriter;
20	import java.io.Reader;
21	import java.sql.Connection;
22	import java.sql.ResultSet;
23	import java.sql.ResultSetMetaData;
24	import java.sql.SQLException;
25	import java.sql.SQLWarning;
26	import java.sql.Statement;
27	import java.util.regex.Matcher;
28	import java.util.regex.Pattern;
29
30	/**
31	* @author Clinton Begin
32	*/
33	public class ScriptRunner {
34
35	private static final String LINE_SEPARATOR = System.lineSeparator();	1✔
36
37	private static final String DEFAULT_DELIMITER = ";";
38
39	private static final Pattern DELIMITER_PATTERN = Pattern	1✔
40	.compile("^\\s((--)\|(//))?\\s(//)?\\s*@DELIMITER\\s+([^\\s]+)", Pattern.CASE_INSENSITIVE);	1✔
41
42	private final Connection connection;
43
44	private boolean stopOnError;
45	private boolean throwWarning;
46	private boolean autoCommit;
47	private boolean sendFullScript;
48	private boolean removeCRs;
49	private boolean escapeProcessing = true;	1✔
50
51	private PrintWriter logWriter = new PrintWriter(System.out);	1✔
52	private PrintWriter errorLogWriter = new PrintWriter(System.err);	1✔
53
54	private String delimiter = DEFAULT_DELIMITER;	1✔
55	private boolean fullLineDelimiter;
56
57	public ScriptRunner(Connection connection) {	1✔
58	this.connection = connection;	1✔
59	}	1✔
60
61	public void setStopOnError(boolean stopOnError) {
62	this.stopOnError = stopOnError;	1✔
63	}	1✔
64
65	public void setThrowWarning(boolean throwWarning) {
66	this.throwWarning = throwWarning;	1✔
67	}	1✔
68
69	public void setAutoCommit(boolean autoCommit) {
70	this.autoCommit = autoCommit;	1✔
71	}	1✔
72
73	public void setSendFullScript(boolean sendFullScript) {
74	this.sendFullScript = sendFullScript;	1✔
75	}	1✔
76
77	public void setRemoveCRs(boolean removeCRs) {
78	this.removeCRs = removeCRs;	1✔
79	}	1✔
80
81	/**
82	* Sets the escape processing.
83	*
84	* @param escapeProcessing
85	* the new escape processing
86	*
87	* @since 3.1.1
88	*/
89	public void setEscapeProcessing(boolean escapeProcessing) {
90	this.escapeProcessing = escapeProcessing;	1✔
91	}	1✔
92
93	public void setLogWriter(PrintWriter logWriter) {
94	this.logWriter = logWriter;	1✔
95	}	1✔
96
97	public void setErrorLogWriter(PrintWriter errorLogWriter) {
98	this.errorLogWriter = errorLogWriter;	1✔
99	}	1✔
100
101	public void setDelimiter(String delimiter) {
102	this.delimiter = delimiter;	1✔
103	}	1✔
104
105	public void setFullLineDelimiter(boolean fullLineDelimiter) {
106	this.fullLineDelimiter = fullLineDelimiter;	1✔
107	}	1✔
108
109	public void runScript(Reader reader) {
110	setAutoCommit();	1✔
111
112	try {
113	if (sendFullScript) {	1✔
114	executeFullScript(reader);	×
115	} else {
116	executeLineByLine(reader);	1✔
117	}
118	} finally {
119	rollbackConnection();	1✔
120	}
121	}	1✔
122
123	private void executeFullScript(Reader reader) {
124	StringBuilder script = new StringBuilder();	×
125	try {
126	BufferedReader lineReader = new BufferedReader(reader);	×
127	String line;
128	while ((line = lineReader.readLine()) != null) {	×
129	script.append(line);	×
130	script.append(LINE_SEPARATOR);	×
131	}
132	String command = script.toString();	×
133	println(command);	×
134	executeStatement(command);	×
135	commitConnection();	×
136	} catch (Exception e) {	×
137	String message = "Error executing: " + script + ". Cause: " + e;	×
138	printlnError(message);	×
139	throw new RuntimeException(message, e);	×
140	}	×
141	}	×
142
143	private void executeLineByLine(Reader reader) {
144	StringBuilder command = new StringBuilder();	1✔
145	try {
146	BufferedReader lineReader = new BufferedReader(reader);	1✔
147	String line;
148	while ((line = lineReader.readLine()) != null) {	1✔
149	handleLine(command, line);	1✔
150	}
151	commitConnection();	1✔
152	checkForMissingLineTerminator(command);	1✔
153	} catch (Exception e) {	×
154	String message = "Error executing: " + command + ". Cause: " + e;	×
155	printlnError(message);	×
156	throw new RuntimeException(message, e);	×
157	}	1✔
158	}	1✔
159
160	/**
161	* @deprecated Since 3.5.4, this method is deprecated. Please close the {@link Connection} outside of this class.
162	*/
163	@Deprecated
164	public void closeConnection() {
165	try {
166	connection.close();	×
167	} catch (Exception e) {	×
168	// ignore
169	}	×
170	}	×
171
172	private void setAutoCommit() {
173	try {
174	if (autoCommit != connection.getAutoCommit()) {	1✔
175	connection.setAutoCommit(autoCommit);	1✔
176	}
177	} catch (Throwable t) {	×
178	throw new RuntimeException("Could not set AutoCommit to " + autoCommit + ". Cause: " + t, t);	×
179	}	1✔
180	}	1✔
181
182	private void commitConnection() {
183	try {
184	if (!connection.getAutoCommit()) {	1✔
185	connection.commit();	1✔
186	}
187	} catch (Throwable t) {	×
188	throw new RuntimeException("Could not commit transaction. Cause: " + t, t);	×
189	}	1✔
190	}	1✔
191
192	private void rollbackConnection() {
193	try {
194	if (!connection.getAutoCommit()) {	1✔
195	connection.rollback();	1✔
196	}
197	} catch (Throwable t) {	×
198	// ignore
199	}	1✔
200	}	1✔
201
202	private void checkForMissingLineTerminator(StringBuilder command) {
203	if (command != null && command.toString().trim().length() > 0) {	1✔
204	throw new RuntimeException("Line missing end-of-line terminator (" + delimiter + ") => " + command);	×
205	}
206	}	1✔
207
208	private void handleLine(StringBuilder command, String line) throws SQLException {
209	String trimmedLine = line.trim();	1✔
210	if (lineIsComment(trimmedLine)) {	1✔
211	Matcher matcher = DELIMITER_PATTERN.matcher(trimmedLine);	1✔
212	if (matcher.find()) {	1✔
213	delimiter = matcher.group(5);	×
214	}
215	println(trimmedLine);	1✔
216	} else if (commandReadyToExecute(trimmedLine)) {	1✔
217	command.append(line, 0, line.lastIndexOf(delimiter));	1✔
218	command.append(LINE_SEPARATOR);	1✔
219	println(command);	1✔
220	executeStatement(command.toString());	1✔
221	command.setLength(0);	1✔
222	} else if (trimmedLine.length() > 0) {	1✔
223	command.append(line);	1✔
224	command.append(LINE_SEPARATOR);	1✔
225	}
226	}	1✔
227
228	private boolean lineIsComment(String trimmedLine) {
229	return trimmedLine.startsWith("//") \|\| trimmedLine.startsWith("--");	1✔
230	}
231
232	private boolean commandReadyToExecute(String trimmedLine) {
233	// issue #561 remove anything after the delimiter
234	return !fullLineDelimiter && trimmedLine.contains(delimiter) \|\| fullLineDelimiter && trimmedLine.equals(delimiter);	1✔
235	}
236
237	private void executeStatement(String command) throws SQLException {
238	Statement statement = connection.createStatement();	1✔
239	try {
240	statement.setEscapeProcessing(escapeProcessing);	1✔
241	String sql = command;	1✔
242	if (removeCRs) {	1✔
243	sql = sql.replace("\r\n", "\n");	×
244	}
245	try {
246	boolean hasResults = statement.execute(sql);	1✔
247	while (hasResults \|\| statement.getUpdateCount() != -1) {	1✔
248	checkWarnings(statement);	1✔
249	printResults(statement, hasResults);	1✔
250	hasResults = statement.getMoreResults();	1✔
251	}
252	} catch (SQLWarning e) {	×
253	throw e;	×
254	} catch (SQLException e) {	×
255	if (stopOnError) {	×
256	throw e;	×
257	}
258	String message = "Error executing: " + command + ". Cause: " + e;	×
259	printlnError(message);	×
260	}	1✔
261	} finally {
262	try {
263	statement.close();	1✔
264	} catch (Exception ignored) {	×
265	// Ignore to workaround a bug in some connection pools
266	// (Does anyone know the details of the bug?)
267	}	1✔
268	}
269	}	1✔
270
271	private void checkWarnings(Statement statement) throws SQLException {
272	if (!throwWarning) {	1✔
273	return;	1✔
274	}
275	// In Oracle, CREATE PROCEDURE, FUNCTION, etc. returns warning
276	// instead of throwing exception if there is compilation error.
277	SQLWarning warning = statement.getWarnings();	1✔
278	if (warning != null) {	1✔
279	throw warning;	×
280	}
281	}	1✔
282
283	private void printResults(Statement statement, boolean hasResults) {
284	if (!hasResults) {	1✔
285	return;	1✔
286	}
287	try (ResultSet rs = statement.getResultSet()) {	1✔
288	ResultSetMetaData md = rs.getMetaData();	1✔
289	int cols = md.getColumnCount();	1✔
290	for (int i = 0; i < cols; i++) {	1✔
291	String name = md.getColumnLabel(i + 1);	1✔
292	print(name + "\t");	1✔
293	}
294	println("");	1✔
295	while (rs.next()) {	1✔
296	for (int i = 0; i < cols; i++) {	1✔
297	String value = rs.getString(i + 1);	1✔
298	print(value + "\t");	1✔
299	}
300	println("");	1✔
301	}
302	} catch (SQLException e) {	×
303	printlnError("Error printing results: " + e.getMessage());	×
304	}	1✔
305	}	1✔
306
307	private void print(Object o) {
308	if (logWriter != null) {	1✔
309	logWriter.print(o);	1✔
310	logWriter.flush();	1✔
311	}
312	}	1✔
313
314	private void println(Object o) {
315	if (logWriter != null) {	1✔
316	logWriter.println(o);	1✔
317	logWriter.flush();	1✔
318	}
319	}	1✔
320
321	private void printlnError(Object o) {
322	if (errorLogWriter != null) {	×
323	errorLogWriter.println(o);	×
324	errorLogWriter.flush();	×
325	}
326	}	×
327
328	}

mybatis / migrations / #436

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