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org.objectstyle.cayenne.access
Class QueryLogger
java.lang.Objectorg.objectstyle.cayenne.access.QueryLogger
- public class QueryLogger
- extends java.lang.Object
A QueryLogger is intended to log special events during query executions. This includes generated SQL statements, result counts, connection events etc. It is a single consistent place for that kind of logging and should be used by all Cayenne classes that work with the database directly.
In many cases it is important to use this class as opposed to logging from the class that performs a particular operation, since QueryLogger will generate consistently formatted logs that are easy to analyze and turn on/off.
For more information see Cayenne User Guide.
| Field Summary | |
static org.apache.log4j.Level |
DEFAULT_LOG_LEVEL
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private static org.apache.log4j.Logger |
logObj
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static int |
TRIM_VALUES_THRESHOLD
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| Constructor Summary | |
QueryLogger()
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| Method Summary | |
protected static void |
appendFormattedByte(java.lang.StringBuffer buf,
byte byteValue)
Prints a byte value to a StringBuffer as a double digit hex value. |
static org.apache.log4j.Level |
getLoggingLevel()
Returns current logging level. |
static boolean |
isLoggable(org.apache.log4j.Level logLevel)
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static void |
logCommitTransaction(org.apache.log4j.Level logLevel)
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static void |
logConnect(org.apache.log4j.Level logLevel,
java.lang.String dataSource)
Logs database connection event using container data source. |
static void |
logConnect(org.apache.log4j.Level logLevel,
java.lang.String url,
java.lang.String userName,
java.lang.String password)
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static void |
logConnectFailure(org.apache.log4j.Level logLevel,
java.lang.Throwable th)
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static void |
logConnectSuccess(org.apache.log4j.Level logLevel)
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static void |
logPoolCreated(org.apache.log4j.Level logLevel,
org.objectstyle.cayenne.conn.DataSourceInfo dsi)
Logs database connection event. |
static void |
logQuery(org.apache.log4j.Level logLevel,
java.lang.String queryStr,
java.util.List params)
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static void |
logQuery(org.apache.log4j.Level logLevel,
java.lang.String queryStr,
java.util.List params,
long time)
Log query content using Log4J Category with "INFO" priority. |
static void |
logQueryError(org.apache.log4j.Level logLevel,
java.lang.Throwable th)
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static void |
logQueryParameters(org.apache.log4j.Level logLevel,
java.lang.String label,
java.util.List parameters)
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static void |
logQueryStart(org.apache.log4j.Level logLevel,
int count)
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static void |
logRollbackTransaction(org.apache.log4j.Level logLevel)
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static void |
logSelectCount(org.apache.log4j.Level logLevel,
int count)
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static void |
logSelectCount(org.apache.log4j.Level logLevel,
int count,
long time)
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static void |
logUpdateCount(org.apache.log4j.Level logLevel,
int count)
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static void |
setLoggingLevel(org.apache.log4j.Level level)
Sets logging level. |
static void |
sqlLiteralForObject(java.lang.StringBuffer buf,
java.lang.Object anObject)
Utility method that appends SQL literal for the specified object to the buffer. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
logObj
private static org.apache.log4j.Logger logObj
DEFAULT_LOG_LEVEL
public static final org.apache.log4j.Level DEFAULT_LOG_LEVEL
TRIM_VALUES_THRESHOLD
public static final int TRIM_VALUES_THRESHOLD
- See Also:
- Constant Field Values
| Constructor Detail |
QueryLogger
public QueryLogger()
| Method Detail |
sqlLiteralForObject
public static void sqlLiteralForObject(java.lang.StringBuffer buf, java.lang.Object anObject)
- Utility method that appends SQL literal for the specified object to the buffer.
Note: this method is not intended to build SQL queries, rather this is used in logging routines only. In particular it will trim large values to avoid flooding the logs.
appendFormattedByte
protected static void appendFormattedByte(java.lang.StringBuffer buf, byte byteValue)
- Prints a byte value to a StringBuffer as a double digit hex value.
getLoggingLevel
public static org.apache.log4j.Level getLoggingLevel()
- Returns current logging level.
setLoggingLevel
public static void setLoggingLevel(org.apache.log4j.Level level)
- Sets logging level.
logConnect
public static void logConnect(org.apache.log4j.Level logLevel, java.lang.String dataSource)
- Logs database connection event using container data source.
logConnect
public static void logConnect(org.apache.log4j.Level logLevel, java.lang.String url, java.lang.String userName, java.lang.String password)
logPoolCreated
public static void logPoolCreated(org.apache.log4j.Level logLevel, org.objectstyle.cayenne.conn.DataSourceInfo dsi)
- Logs database connection event.
logConnectSuccess
public static void logConnectSuccess(org.apache.log4j.Level logLevel)
logConnectFailure
public static void logConnectFailure(org.apache.log4j.Level logLevel, java.lang.Throwable th)
logQuery
public static void logQuery(org.apache.log4j.Level logLevel, java.lang.String queryStr, java.util.List params)
logQuery
public static void logQuery(org.apache.log4j.Level logLevel, java.lang.String queryStr, java.util.List params, long time)
- Log query content using Log4J Category with "INFO" priority.
logQueryParameters
public static void logQueryParameters(org.apache.log4j.Level logLevel, java.lang.String label, java.util.List parameters)
logSelectCount
public static void logSelectCount(org.apache.log4j.Level logLevel, int count)
logSelectCount
public static void logSelectCount(org.apache.log4j.Level logLevel, int count, long time)
logUpdateCount
public static void logUpdateCount(org.apache.log4j.Level logLevel, int count)
logCommitTransaction
public static void logCommitTransaction(org.apache.log4j.Level logLevel)
logRollbackTransaction
public static void logRollbackTransaction(org.apache.log4j.Level logLevel)
logQueryError
public static void logQueryError(org.apache.log4j.Level logLevel, java.lang.Throwable th)
logQueryStart
public static void logQueryStart(org.apache.log4j.Level logLevel, int count)
isLoggable
public static boolean isLoggable(org.apache.log4j.Level logLevel)
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