Session.java
| Index Score | ||
|---|---|---|
 |
 |
org.hsqldb |
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|
HSQL Database Engine |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| DECL_COMMENTS | Comments in declarations |  |
| RETURNS | Number of return points from functions | |
| LINE_COMMENT | Number of line comments | |
| BLOCKS | Number of blocks | |
| SIZE | Size of the file in bytes | |
| EXITS | Procedure exits | |
| CYCLOMATIC | Cyclomatic complexity | |
| LINES | Number of lines in the source file | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| FUNCTIONS | Number of function declarations | |
| ELOC | Effective lines of code | |
| LOC | Lines of code | |
| COMMENTS | Comment lines | |
| LOGICAL_LINES | Number of statements | |
| OPERATORS | Number of operators | |
| PROGRAM_LENGTH | Halstead program length | |
| UNIQUE_OPERANDS | Number of unique operands | |
| WHITESPACE | Number of whitespace lines | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| OPERANDS | Number of operands | |
| JAVA0031 | JAVA0031 Case statement not properly closed | |
| DOC_COMMENT | Number of javadoc comment lines | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| JAVA0166 | JAVA0166 Generic exception caught | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0170 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0032 | JAVA0032 Switch statement missing default | |
| PARAMS | Number of formal parameter declarations | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0160 | JAVA0160 Method does not throw specified exception | |
| JAVA0008 | JAVA0008 Empty catch block | |
| JAVA0007 | JAVA0007 Should not declare public field | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0116 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0040 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| COMPARISONS | Number of comparison operators | |
| UNIQUE_OPERATORS | Number of unique operators | |
| EXEC_COMMENTS | Comments in executable code | |
| JAVA0143 | JAVA0143 Synchronized method | |
| BLOCK_COMMENT | Number of block comment lines | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0285 | JAVA0285 Dereference of potentially null variable | |
| JAVA0112 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/* Copyright (c) 1995-2000, The Hypersonic SQL Group.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the Hypersonic SQL Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE HYPERSONIC SQL GROUP,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* on behalf of the Hypersonic SQL Group.
*
*
* For work added by the HSQL Development Group:
*
* Copyright (c) 2001-2007, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.hsqldb;
import java.io.DataInput;
import java.sql.Date;
import java.sql.Timestamp;
import org.hsqldb.HsqlNameManager.HsqlName;
import org.hsqldb.jdbc.jdbcConnection;
import org.hsqldb.lib.ArrayUtil;
import org.hsqldb.lib.HashMappedList;
import org.hsqldb.lib.HsqlArrayList;
import org.hsqldb.lib.SimpleLog;
import org.hsqldb.lib.java.JavaSystem;
import org.hsqldb.navigator.ClientRowSetNavigator;
import org.hsqldb.navigator.RowSetNavigator;
import org.hsqldb.result.Result;
import org.hsqldb.result.ResultConstants;
import org.hsqldb.result.ResultLob;
import org.hsqldb.result.ResultMetaData;
import org.hsqldb.store.ValuePool;
import org.hsqldb.types.BlobData;
import org.hsqldb.types.ClobData;
import org.hsqldb.types.TimeData;
import org.hsqldb.rights.User;
import org.hsqldb.rights.Grantee;
// fredt@users 20020320 - doc 1.7.0 - update
// fredt@users 20020315 - patch 1.7.0 - switch for scripting
// fredt@users 20020130 - patch 476694 by velichko - transaction savepoints
// additions in different parts to support savepoint transactions
// fredt@users 20020910 - patch 1.7.1 by fredt - database readonly enforcement
// fredt@users 20020912 - patch 1.7.1 by fredt - permanent internal connection
// boucherb@users 20030512 - patch 1.7.2 - compiled statements
// - session becomes execution hub
// boucherb@users 20050510 - patch 1.7.2 - generalized Result packet passing
// based command execution
// - batch execution handling
// fredt@users 20030628 - patch 1.7.2 - session proxy support
// fredt@users 20040509 - patch 1.7.2 - SQL conformance for CURRENT_TIMESTAMP and other datetime functions
/**
* Implementation of a user session with the database. In 1.7.2, Session
* becomes the public interface to an HSQLDB database, accessed locally or
* remotely via SessionInterface.
*
* When a Session is closed, all references to internal engine objects are
* set to null. But the session id and scripting mode may still be used for
* scripting
*
* New class based on original Hypersonic code.<p>
* Extensively rewritten and extended in successive versions of HSQLDB.
*
* @author Thomas Mueller (Hypersonic SQL Group)
* @version 1.8.0
* @since 1.7.0
*/
public class Session implements SessionInterface {
//
private volatile boolean isAutoCommit;
private volatile boolean isReadOnly;
private volatile boolean isClosed;
//
public Database database;
private User user;
// transaction support
int isolationMode = SessionInterface.TX_READ_COMMITTED;
int actionIndex;
long actionTimestamp;
long transactionTimestamp;
HsqlArrayList rowActionList;
boolean rollbackNestedTransaction;
HashMappedList savepoints;
//
private int currentMaxRows;
private int sessionMaxRows;
private Number lastIdentity = ValuePool.getInt(0);
private final long sessionId;
private boolean script;
private CommandParser parser;
//
private jdbcConnection intConnection;
// schema
public HsqlName currentSchema;
public HsqlName loggedSchema;
private HsqlName oldSchema;
// query processing
boolean isProcessingScript;
boolean isProcessingLog;
public CompiledStatementExecutor compiledStatementExecutor;
boolean isNetwork;
int resultMaxMemoryRows;
public SessionData sessionData;
/** @todo fredt - clarify in which circumstances Session has to disconnect */
Session getSession() {
return this;
}
/**
* Constructs a new Session object.
*
* @param db the database to which this represents a connection
* @param user the initial user
* @param autocommit the initial autocommit value
* @param readonly the initial readonly value
* @param id the session identifier, as known to the database
*/
Session(Database db, User user, boolean autocommit, boolean readonly,
long id) {
sessionId = id;
database = db;
this.user = user;
rowActionList = new HsqlArrayList(true);
savepoints = new HashMappedList(4);
isAutoCommit = autocommit;
isReadOnly = readonly;
compiledStatementExecutor = new CompiledStatementExecutor(this);
parser = new CommandParser(this, new Tokenizer());
resultMaxMemoryRows = database.getResultMaxMemoryRows();
resetSchema();
sessionData = new SessionData(database, this);
}
void resetSchema() {
HsqlName initialSchema = user.getInitialSchema();
currentSchema = initialSchema == null
? database.schemaManager.getDefaultSchemaHsqlName()
: initialSchema;
}
/**
* Retrieves the session identifier for this Session.
*
* @return the session identifier for this Session
*/
public long getId() {
return sessionId;
}
/**
* Closes this Session.
*/
public void close() {
if (isClosed) {
return;
}
synchronized (database) {
// test again inside block
if (isClosed) {
return;
}
database.sessionManager.removeSession(this);
rollback();
try {
database.logger.writeToLog(this, Token.T_DISCONNECT);
} catch (HsqlException e) {}
sessionData.clearIndexRoots();
sessionData.clearIndexRootsKeep();
sessionData.closeAllNavigators();
sessionData.closeResultCache();
database.compiledStatementManager.removeSession(sessionId);
database.closeIfLast();
database = null;
user = null;
rowActionList = null;
savepoints = null;
intConnection = null;
compiledStatementExecutor = null;
lastIdentity = null;
isClosed = true;
}
}
/**
* Retrieves whether this Session is closed.
*
* @return true if this Session is closed
*/
public boolean isClosed() {
return isClosed;
}
public void setIsolation(int level) throws HsqlException {
isolationMode = level;
}
public int getIsolation() throws HsqlException {
return isolationMode;
}
/**
* Setter for iLastIdentity attribute.
*
* @param i the new value
*/
void setLastIdentity(Number i) {
lastIdentity = i;
}
/**
* Getter for iLastIdentity attribute.
*
* @return the current value
*/
public Object getLastIdentity() {
return lastIdentity;
}
/**
* Retrieves the Database instance to which this
* Session represents a connection.
*
* @return the Database object to which this Session is connected
*/
public Database getDatabase() {
return database;
}
/**
* Retrieves the name, as known to the database, of the
* user currently controlling this Session.
*
* @return the name of the user currently connected within this Session
*/
public String getUsername() {
return user.getName();
}
/**
* Retrieves the User object representing the user currently controlling
* this Session.
*
* @return this Session's User object
*/
public User getUser() {
return user;
}
public User getGrantee() {
return user;
}
/**
* Sets this Session's User object to the one specified by the
* user argument.
*
* @param user the new User object for this session
*/
void setUser(User user) {
this.user = user;
}
int getMaxRows() {
return currentMaxRows;
}
public int getSQLMaxRows() {
return sessionMaxRows;
}
/**
* The SQL command SET MAXROWS n will override the Statement.setMaxRows(n)
* until SET MAXROWS 0 is issued.
*
* NB this is dedicated to the SET MAXROWS sql statement and should not
* otherwise be called. (fredt@users)
*/
void setSQLMaxRows(int rows) {
currentMaxRows = sessionMaxRows = rows;
}
/**
* Checks whether this Session's current User has the privileges of
* the ADMIN role.
*
* @throws HsqlException if this Session's User does not have the
* privileges of the ADMIN role.
*/
void checkAdmin() throws HsqlException {
user.checkAdmin();
}
/**
* This is used for reading - writing to existing tables.
* @throws HsqlException
*/
void checkReadWrite() throws HsqlException {
if (isReadOnly) {
throw Trace.error(Trace.DATABASE_IS_READONLY);
}
}
/**
* This is used for creating new database objects such as tables.
* @throws HsqlException
*/
void checkDDLWrite() throws HsqlException {
if (database.isFilesReadOnly()) {
throw Trace.error(Trace.DATABASE_IS_READONLY);
}
checkReadWrite();
}
/**
* Adds a delete ation to the action list.
*
* @param table the table of the row
* @param row the deleted row
* @throws HsqlException
*/
void addDeleteAction(Table table, Row row) throws HsqlException {
Transaction t = new Transaction(true, table, row, actionTimestamp);
rowActionList.add(t);
database.txManager.addTransaction(this, t);
}
/**
* Adds a row insert action to the action list.
*
* @param table the table into which the row was inserted
* @param row the inserted row
* @throws HsqlException
*/
void addInsertAction(Table table, Row row) throws HsqlException {
Transaction t = new Transaction(false, table, row, actionTimestamp);
rowActionList.add(t);
database.txManager.addTransaction(this, t);
}
/**
* Setter for the autocommit attribute.
*
* @param autocommit the new value
* @throws HsqlException
*/
public void setAutoCommit(boolean autocommit) {
if (isClosed) {
return;
}
synchronized (database) {
if (autocommit != isAutoCommit) {
commit();
isAutoCommit = autocommit;
}
}
}
public void beginAction() throws HsqlException {
actionIndex = rowActionList.size();
}
public void endAction(Result r) throws HsqlException {
if (r.isError()) {
database.txManager.rollbackNested(this);
}
if (isAutoCommit) {
commit();
}
}
public void startPhasedTransaction() throws HsqlException {}
public void prepareCommit() throws HsqlException {}
/**
* Commits any uncommited transaction this Session may have open
*
* @throws HsqlException
*/
public void commit() {
if (isClosed) {
return;
}
synchronized (database) {
if (!rowActionList.isEmpty()) {
try {
database.logger.writeCommitStatement(this);
} catch (HsqlException e) {}
}
database.txManager.commit(this);
sessionData.clearIndexRoots();
}
}
/**
* Rolls back any uncommited transaction this Session may have open.
*
* @throws HsqlException
*/
public void rollback() {
if (isClosed) {
return;
}
synchronized (database) {
if (rowActionList.size() != 0) {
try {
database.logger.writeToLog(this, Token.T_ROLLBACK);
} catch (HsqlException e) {}
}
database.txManager.rollback(this);
sessionData.clearIndexRoots();
}
}
/**
* No-op in this implementation
*/
public void resetSession() throws HsqlException {
throw new HsqlException("", "", 0);
}
/**
* Registers a transaction SAVEPOINT. A new SAVEPOINT with the
* name of an existing one replaces the old SAVEPOINT.
*
* @param name name of the savepoint
* @throws HsqlException if there is no current transaction
*/
public void savepoint(String name) throws HsqlException {
savepoints.remove(name);
savepoints.add(name, ValuePool.getInt(rowActionList.size()));
try {
database.logger.writeToLog(this,
DatabaseScript.getSavepointDDL(name));
} catch (HsqlException e) {}
}
/**
* Performs a partial transaction ROLLBACK to savepoint.
*
* @param name name of savepoint
* @throws HsqlException
*/
public void rollbackToSavepoint(String name) throws HsqlException {
if (isClosed) {
return;
}
try {
database.logger.writeToLog(
this, DatabaseScript.getSavepointRollbackDDL(name));
} catch (HsqlException e) {}
database.txManager.rollbackSavepoint(this, name);
}
/**
* Releases a savepoint
*
* @param name name of savepoint
* @throws HsqlException if name does not correspond to a savepoint
*/
public void releaseSavepoint(String name) throws HsqlException {
// remove this and all later savepoints
int index = savepoints.getIndex(name);
Trace.check(index >= 0, Trace.SAVEPOINT_NOT_FOUND, name);
while (savepoints.size() > index) {
savepoints.remove(savepoints.size() - 1);
}
}
/**
* Setter for readonly attribute.
*
* @param readonly the new value
*/
public void setReadOnly(boolean readonly) throws HsqlException {
if (!readonly && database.databaseReadOnly) {
throw Trace.error(Trace.DATABASE_IS_READONLY);
}
isReadOnly = readonly;
}
/**
* Getter for readonly attribute.
*
* @return the current value
*/
public boolean isReadOnly() {
return isReadOnly;
}
/**
* Getter for autoCommit attribute.
*
* @return the current value
*/
public boolean isAutoCommit() {
return isAutoCommit;
}
/**
* A switch to set scripting on the basis of type of statement executed.
* Afterwards the method reponsible for logging uses
* isScripting() to determine if logging is required for the executed
* statement. (fredt@users)
*
* @param script The new scripting value
*/
void setScripting(boolean script) {
this.script = script;
}
/**
* Getter for scripting attribute.
*
* @return scripting for the last statement.
*/
boolean isScripting() {
return script;
}
/**
* Retrieves an internal Connection object equivalent to the one
* that created this Session.
*
* @return internal connection.
*/
jdbcConnection getInternalConnection() throws HsqlException {
if (intConnection == null) {
intConnection = new jdbcConnection(this);
}
return intConnection;
}
// boucherb@users 20020810 metadata 1.7.2
//----------------------------------------------------------------
private final long connectTime = System.currentTimeMillis();
// more effecient for MetaData concerns than checkAdmin
/**
* Getter for admin attribute.
*
* @ return the current value
*/
public boolean isAdmin() {
return user.isAdmin();
}
/**
* Getter for connectTime attribute.
*
* @return the value
*/
public long getConnectTime() {
return connectTime;
}
/**
* Getter for transactionSise attribute.
*
* @return the current value
*/
public int getTransactionSize() {
return rowActionList.size();
}
CompiledStatement compileStatement(String sql) throws HsqlException {
parser.reset(sql);
CompiledStatement cs = parser.compileStatement(currentSchema);
cs.sql = sql;
return cs;
}
/**
* Executes the command encapsulated by the cmd argument.
*
* @param cmd the command to execute
* @return the result of executing the command
*/
public Result execute(Result cmd) {
try {
if (isClosed) {
Trace.check(false, Trace.ACCESS_IS_DENIED,
Trace.getMessage(Trace.Session_execute));
}
} catch (Throwable t) {
return Result.newErrorResult(t, null);
}
synchronized (database) {
int type = cmd.getType();
if (sessionMaxRows == 0) {
currentMaxRows = cmd.getUpdateCount();
}
// we simply get the next system change number - no matter what type of query
actionTimestamp = database.txManager.nextActionTimestamp();
JavaSystem.gc();
switch (type) {
case ResultConstants.LARGE_OBJECT_OP : {
return performLOBOperation((ResultLob) cmd);
}
case ResultConstants.EXECUTE : {
Result result = executeCompiledStatement(cmd);
result = performPostExecute(cmd, result);
return result;
}
case ResultConstants.BATCHEXECUTE : {
Result result = executeCompiledBatchStatement(cmd);
result = performPostExecute(cmd, result);
return result;
}
case ResultConstants.EXECDIRECT : {
Result result =
executeDirectStatement(cmd.getMainString());
result = performPostExecute(cmd, result);
return result;
}
case ResultConstants.BATCHEXECDIRECT : {
Result result = executeDirectBatchStatement(cmd);
result = performPostExecute(cmd, result);
return result;
}
case ResultConstants.PREPARE : {
CompiledStatement cs;
try {
cs = database.compiledStatementManager.compile(this,
cmd.getMainString());
} catch (Throwable t) {
return Result.newErrorResult(t, cmd.getMainString());
}
cs.setGeneratedColumnInfo(
cmd.getGeneratedResultType(),
cmd.getGeneratedResultMetaData());
ResultMetaData rmd = cs.getResultMetaData();
ResultMetaData pmd = cs.getParametersMetaData();
return Result.newPrepareResponse(cs.id, cs.type, rmd, pmd);
}
case ResultConstants.CLOSE_RESULT : {
closeNavigator(cmd.getResultId());
return Result.updateZeroResult;
}
case ResultConstants.FREESTMT : {
database.compiledStatementManager.freeStatement(
cmd.getStatementID(), sessionId, false);
return Result.updateZeroResult;
}
case ResultConstants.GETSESSIONATTR : {
return getAttributes();
}
case ResultConstants.SETSESSIONATTR : {
return setAttributes(cmd);
}
case ResultConstants.ENDTRAN : {
switch (cmd.getEndTranType()) {
case ResultConstants.COMMIT :
commit();
break;
case ResultConstants.ROLLBACK :
rollback();
break;
case ResultConstants.SAVEPOINT_NAME_RELEASE :
try {
String name = cmd.getMainString();
releaseSavepoint(name);
} catch (Throwable t) {
return Result.newErrorResult(t, null);
}
break;
case ResultConstants.SAVEPOINT_NAME_ROLLBACK :
try {
rollbackToSavepoint(cmd.getMainString());
} catch (Throwable t) {
return Result.newErrorResult(t, null);
}
break;
// not yet
// case ResultConstants.COMMIT_AND_CHAIN :
// case ResultConstants.ROLLBACK_AND_CHAIN :
}
return Result.updateZeroResult;
}
case ResultConstants.SETCONNECTATTR : {
switch (cmd.getConnectionAttrType()) {
case ResultConstants.SQL_ATTR_SAVEPOINT_NAME :
try {
savepoint(cmd.getMainString());
} catch (Throwable t) {
return Result.newErrorResult(t, null);
}
// case ResultConstants.SQL_ATTR_AUTO_IPD
// - always true
// default: throw - case never happens
}
return Result.updateZeroResult;
}
case ResultConstants.REQUESTDATA : {
return sessionData.getDataResultSlice(cmd.getResultId(),
cmd.getUpdateCount(),
cmd.getFetchSize());
}
case ResultConstants.DISCONNECT : {
close();
return Result.updateZeroResult;
}
default : {
return Result.newErrorResult(
Trace.runtimeError(
Trace.UNSUPPORTED_INTERNAL_OPERATION,
"Session.execute()"), null);
}
}
}
}
private Result performPostExecute(Result command, Result result) {
try {
if (database != null) {
database.schemaManager.logSequences(this, database.logger);
if (isAutoCommit) {
database.logger.synchLog();
}
}
if (result.isData()) {
sessionData.getDataResultHead(command, result, isNetwork);
}
return result;
} catch (Exception e) {
return Result.newErrorResult(e, null);
} finally {
if (database != null && database.logger.needsCheckpoint()) {
try {
database.logger.checkpoint(false);
} catch (HsqlException e) {
database.logger.appLog.logContext(
SimpleLog.LOG_ERROR, "checkpoint did not complete");
}
}
}
}
public ClientRowSetNavigator getRows(long navigatorId, int offset,
int blockSize) throws HsqlException {
return sessionData.getRowSetSlice(navigatorId, offset, blockSize);
}
public void closeNavigator(long id) {
sessionData.closeNavigator(id);
}
/*
public Result sqlExecuteDirectNoPreChecks(String sql) {
synchronized (database) {
return dbCommandInterpreter.execute(sql);
}
}
*/
public Result executeDirectStatement(String sql) {
synchronized (database) {
return parser.execute(sql);
}
}
Result executeCompiledStatement(CompiledStatement cs, Object[] pvals) {
Result r;
try {
beginAction();
} catch (HsqlException e) {
return Result.newErrorResult(e, null);
}
// tempActionHistory.add("sql execute " + cs.sql + " " + actionTimestamp + " " + rowActionList.size());
r = compiledStatementExecutor.execute(cs, pvals);
// tempActionHistory.add("sql execute end " + actionTimestamp + " " + rowActionList.size());
try {
endAction(r);
} catch (HsqlException e) {
return Result.newErrorResult(e, null);
}
return r;
}
private Result executeCompiledBatchStatement(Result cmd) {
int csid;
CompiledStatement cs;
int[] updateCounts;
int count;
csid = cmd.getStatementID();
cs = database.compiledStatementManager.getStatement(this, csid);
if (cs == null) {
// invalid sql has been removed already
return Result.newErrorResult(
Trace.runtimeError(Trace.INVALID_PREPARED_STATEMENT, null),
null);
}
count = 0;
RowSetNavigator nav = cmd.initialiseNavigator();
updateCounts = new int[nav.getSize()];
Result generatedResult = null;
if (cs.hasGeneratedColumns()) {
generatedResult = Result.newDataResult(cs.generatedResultMetaData);
}
Result error = null;
while (nav.hasNext()) {
Object[] pvals = (Object[]) nav.getNext();
Result in = executeCompiledStatement(cs, pvals);
// On the client side, iterate over the vals and throw
// a BatchUpdateException if a batch status value of
// esultConstants.EXECUTE_FAILED is encountered in the result
if (in.isUpdateCount()) {
if (cs.hasGeneratedColumns()) {
Object generatedRow = in.getNavigator().getNext();
generatedResult.getNavigator().add(generatedRow);
}
updateCounts[count++] = in.getUpdateCount();
} else if (in.isData()) {
// FIXME: we don't have what it takes yet
// to differentiate between things like
// stored procedure calls to methods with
// void return type and select statements with
// a single row/column containg null
updateCounts[count++] = ResultConstants.SUCCESS_NO_INFO;
} else if (in.isError()) {
updateCounts = ArrayUtil.arraySlice(updateCounts, 0, count);
error = in;
break;
} else {
throw Trace.runtimeError(Trace.UNSUPPORTED_INTERNAL_OPERATION,
"Session");
}
}
return Result.newBatchedExecuteResponse(updateCounts, generatedResult,
error);
}
private Result executeDirectBatchStatement(Result cmd) {
int[] updateCounts;
int count;
count = 0;
RowSetNavigator nav = cmd.initialiseNavigator();
updateCounts = new int[nav.getSize()];
Result error = null;
while (nav.hasNext()) {
Result in;
Object[] data = (Object[]) nav.getNext();
String sql = (String) data[0];
try {
in = executeDirectStatement(sql);
} catch (Throwable t) {
in = Result.newErrorResult(t, null);
// if (t instanceof OutOfMemoryError) {
// System.gc();
// }
// "in" alread equals "err"
// maybe test for OOME and do a gc() ?
// t.printStackTrace();
}
if (in.isUpdateCount()) {
updateCounts[count++] = in.getUpdateCount();
} else if (in.isData()) {
// FIXME: we don't have what it takes yet
// to differentiate between things like
// stored procedure calls to methods with
// void return type and select statements with
// a single row/column containg null
updateCounts[count++] = ResultConstants.SUCCESS_NO_INFO;
} else if (in.isError()) {
updateCounts = ArrayUtil.arraySlice(updateCounts, 0, count);
error = in;
break;
} else {
throw Trace.runtimeError(Trace.UNSUPPORTED_INTERNAL_OPERATION,
"Session");
}
}
return Result.newBatchedExecuteResponse(updateCounts, null, error);
}
/**
* Retrieves the result of executing the prepared statement whose csid
* and parameter values/types are encapsulated by the cmd argument.
*
* @return the result of executing the statement
*/
private Result executeCompiledStatement(Result cmd) {
int csid = cmd.getStatementID();
CompiledStatement cs =
database.compiledStatementManager.getStatement(this, csid);
if (cs == null) {
// invalid sql has been removed already
return Result.newErrorResult(
Trace.runtimeError(Trace.INVALID_PREPARED_STATEMENT, null),
null);
}
Object[] pvals = cmd.getParameterData();
return executeCompiledStatement(cs, pvals);
}
// session DATETIME functions
long currentDateTimeSCN;
long currentMillis;
private Date currentDate;
private TimeData currentTime;
private Timestamp currentTimestamp;
/**
* Returns the current date, unchanged for the duration of the current
* execution unit (statement).<p>
*
* SQL standards require that CURRENT_DATE, CURRENT_TIME and
* CURRENT_TIMESTAMP are all evaluated at the same point of
* time in the duration of each SQL statement, no matter how long the
* SQL statement takes to complete.<p>
*
* When this method or a corresponding method for CURRENT_TIME or
* CURRENT_TIMESTAMP is first called in the scope of a system change
* number, currentMillis is set to the current system time. All further
* CURRENT_XXXX calls in this scope will use this millisecond value.
* (fredt@users)
*/
public Date getCurrentDate() {
if (currentDateTimeSCN != actionTimestamp) {
currentDateTimeSCN = actionTimestamp;
currentMillis = System.currentTimeMillis();
currentDate = HsqlDateTime.getCurrentDate(currentMillis);
currentTime = null;
currentTimestamp = null;
} else if (currentDate == null) {
currentDate = HsqlDateTime.getCurrentDate(currentMillis);
}
return currentDate;
}
/**
* Returns the current time, unchanged for the duration of the current
* execution unit (statement)
*/
TimeData getCurrentTime() {
if (currentDateTimeSCN != actionTimestamp) {
currentDateTimeSCN = actionTimestamp;
currentMillis = System.currentTimeMillis();
currentDate = null;
currentTime =
new TimeData(HsqlDateTime.getNormalisedTime(currentMillis));
currentTimestamp = null;
} else if (currentTime == null) {
currentTime =
new TimeData(HsqlDateTime.getNormalisedTime(currentMillis));
}
return currentTime;
}
/**
* Returns the current timestamp, unchanged for the duration of the current
* execution unit (statement)
*/
Timestamp getCurrentTimestamp() {
if (currentDateTimeSCN != actionTimestamp) {
currentDateTimeSCN = actionTimestamp;
currentMillis = System.currentTimeMillis();
currentDate = null;
currentTime = null;
currentTimestamp = HsqlDateTime.getTimestamp(currentMillis);
} else if (currentTimestamp == null) {
currentTimestamp = HsqlDateTime.getTimestamp(currentMillis);
}
return currentTimestamp;
}
Result getAttributes() {
Result r = Result.newSessionAttributesResult();
Object[] data = new Object[] {
database.getURI(), getUsername(), ValuePool.getLong(sessionId),
ValuePool.getInt(isolationMode),
ValuePool.getBoolean(isAutoCommit),
ValuePool.getBoolean(database.databaseReadOnly),
ValuePool.getBoolean(isReadOnly)
};
r.setSessionAttributes(data);
return r;
}
Result setAttributes(Result r) {
Object[] row = r.getSessionAttributes();
for (int i = 0; i < row.length; i++) {
Object value = row[i];
if (value == null) {
continue;
}
try {
switch (i) {
case SessionInterface.INFO_AUTOCOMMIT : {
this.setAutoCommit(((Boolean) value).booleanValue());
break;
}
case SessionInterface.INFO_CONNECTION_READONLY :
this.setReadOnly(((Boolean) value).booleanValue());
break;
}
} catch (HsqlException e) {
return Result.newErrorResult(e, null);
}
}
return Result.updateZeroResult;
}
Result performLOBOperation(ResultLob cmd) {
long id = cmd.getLobID();
int operation = cmd.getSubType();
switch (operation) {
case ResultLob.LobResultTypes.REQUEST_CREATE_BYTES :
return ResultLob.newLobCreateBlobResponse(id);
case ResultLob.LobResultTypes.REQUEST_CREATE_CHARS :
return ResultLob.newLobCreateClobResponse(id);
}
Object lob = database.lobManager.getLob(id);
if (lob == null) {
return Result.newErrorResult(
Trace.error(Trace.BLOB_IS_NO_LONGER_VALID), null);
}
switch (operation) {
case ResultLob.LobResultTypes.REQUEST_OPEN :
case ResultLob.LobResultTypes.REQUEST_CLOSE : {
throw Trace.runtimeError(Trace.UNSUPPORTED_INTERNAL_OPERATION,
"Session");
}
case ResultLob.LobResultTypes.REQUEST_GET_BYTES : {
try {
byte[] bytes = ((BlobData) lob).getBytes(cmd.getOffset(),
(int) cmd.getBlockLength());
return ResultLob.newLobGetBytesResponse(id,
cmd.getOffset(), bytes);
} catch (HsqlException e) {
return Result.newErrorResult(e, "blob operation");
}
}
case ResultLob.LobResultTypes.REQUEST_SET_BYTES : {
try {
((BlobData) lob).setBytes(cmd.getOffset(),
cmd.getByteArray());
return ResultLob.newLobSetBytesResponse(id);
} catch (HsqlException e) {
return Result.newErrorResult(e, null);
}
}
case ResultLob.LobResultTypes.REQUEST_GET_CHARS : {
try {
char[] chars = ((ClobData) lob).getChars(cmd.getOffset(),
(int) cmd.getBlockLength());
return ResultLob.newLobGetCharsResponse(id,
cmd.getOffset(), chars);
} catch (HsqlException e) {
return Result.newErrorResult(e, "blob operation");
}
}
case ResultLob.LobResultTypes.REQUEST_SET_CHARS : {
try {
char[] chars = cmd.getCharArray();
((ClobData) lob).setChars(cmd.getOffset(), chars, 0,
chars.length);
return ResultLob.newLobSetCharsResponse(id);
} catch (HsqlException e) {
return Result.newErrorResult(e, null);
}
}
case ResultLob.LobResultTypes.REQUEST_GET_BYTE_PATTERN_POSITION :
case ResultLob.LobResultTypes.REQUEST_GET_CHAR_PATTERN_POSITION : {
throw Trace.runtimeError(Trace.UNSUPPORTED_INTERNAL_OPERATION,
"Session");
}
default : {
throw Trace.runtimeError(Trace.UNSUPPORTED_INTERNAL_OPERATION,
"Session");
}
}
}
// DatabaseMetaData.getURL should work as specified for
// internal connections too.
public String getInternalConnectionURL() {
return DatabaseURL.S_URL_PREFIX + database.getURI();
}
boolean isProcessingScript() {
return isProcessingScript;
}
boolean isProcessingLog() {
return isProcessingLog;
}
// schema processing
boolean isSchemaDefintion() {
return oldSchema != null;
}
void startSchemaDefinition(String schema) throws HsqlException {
if (isProcessingScript) {
setSchema(schema);
return;
}
oldSchema = currentSchema;
setSchema(schema);
}
void endSchemaDefinition() throws HsqlException {
if (oldSchema == null) {
return;
}
currentSchema = oldSchema;
oldSchema = null;
database.logger.writeToLog(this,
DatabaseScript.getSetSchemaDDL(database,
currentSchema));
}
// schema object methods
public void setSchema(String schema) throws HsqlException {
currentSchema = database.schemaManager.getSchemaHsqlName(schema);
}
/**
* If schemaName is null, return the current schema name, else return
* the HsqlName object for the schema. If schemaName does not exist,
* throw.
*/
HsqlName getSchemaHsqlName(String name) throws HsqlException {
return name == null ? currentSchema
: database.schemaManager.getSchemaHsqlName(name);
}
/**
* Same as above, but return string
*/
public String getSchemaName(String name) throws HsqlException {
return name == null ? currentSchema.name
: database.schemaManager.getSchemaName(name);
}
public HsqlName getCurrentSchemaHsqlName() {
return currentSchema;
}
// session tables
Table[] transitionTables = new Table[0];
public void setSessionTables(Table[] tables) {
transitionTables = tables;
}
public Table findSessionTable(String name) {
for (int i = 0; i < transitionTables.length; i++) {
if (name.equals(transitionTables[i].getName().name)) {
return transitionTables[i];
}
}
return null;
}
//
public int getResultMemoryRowCount() {
return resultMaxMemoryRows;
}
public void setResultMemoryRowCount(int count) {
if (database.getTempDirectoryPath() != null) {
resultMaxMemoryRows = count;
}
}
// warnings
HsqlArrayList sqlWarnings;
public void addWarning(HsqlException warning) {
if (sqlWarnings == null) {
sqlWarnings = new HsqlArrayList(true);
}
sqlWarnings.add(warning);
}
public HsqlException[] getAndClearWarnings() {
if (sqlWarnings == null) {
return new HsqlException[0];
}
HsqlException[] array = new HsqlException[sqlWarnings.size()];
sqlWarnings.toArray(array);
sqlWarnings.clear();
return array;
}
// logs
public synchronized long getLobId() {
return database.lobManager.getNewLobId();
}
public void registerResultLobs(Result result) throws HsqlException {
sessionData.registerLobForResult(result);
}
public void allocateResultLob(ResultLob result,
DataInput dataInput) throws HsqlException {
sessionData.allocateLobForResult(result, dataInput);
}
}
The table below shows all metrics for Session.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 200.00 | Number of blocks | |
| BLOCK_COMMENT | 72.00 | Number of block comment lines | |
| COMMENTS | 375.00 | Comment lines | |
| COMMENT_DENSITY | 0.60 | Comment density | |
| COMPARISONS | 49.00 | Number of comparison operators | |
| CYCLOMATIC | 186.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 74.00 | Comments in declarations | |
| DOC_COMMENT | 239.00 | Number of javadoc comment lines | |
| ELOC | 624.00 | Effective lines of code | |
| EXEC_COMMENTS | 13.00 | Comments in executable code | |
| EXITS | 146.00 | Procedure exits | |
| FUNCTIONS | 78.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 87.70 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 193.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 1.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 5.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 5.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 5.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 4.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 0.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 1.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 0.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 0.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 0.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 1.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 0.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 0.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 1.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 4.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 7.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 3.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 5.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 5.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 14.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 0.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 1.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 0.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 1.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 0.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 3.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 7.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 6.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 0.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 9.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 1.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 1.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 1.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 1432.00 | Number of lines in the source file | |
| LINE_COMMENT | 64.00 | Number of line comments | |
| LOC | 794.00 | Lines of code | |
| LOGICAL_LINES | 362.00 | Number of statements | |
| LOOPS | 5.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 1474.00 | Number of operands | |
| OPERATORS | 2999.00 | Number of operators | |
| PARAMS | 47.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 4473.00 | Halstead program length | |
| PROGRAM_VOCAB | 536.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 146.00 | Number of return points from functions | |
| SIZE | 44689.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 479.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 57.00 | Number of unique operators | |
| WHITESPACE | 263.00 | Number of whitespace lines | |