java.lang.Object
- org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
- - org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - - org.eclipse.persistence.platform.database.DatabasePlatform
    - - org.eclipse.persistence.platform.database.MySQLPlatform

All Implemented Interfaces:

Serializable, Cloneable, CorePlatform<ConversionManager>, Platform

Direct Known Subclasses:

MariaDBPlatform
```
public class MySQLPlatform
extends DatabasePlatform
```
Purpose: Provides MySQL specific behavior.
Responsibilities:
- Native SQL for Date, Time, & Timestamp.
- Native sequencing.
- Mapping of class types to database types for the schema framework.
- Pessimistic locking.
- Platform specific operators.
Since:

OracleAS TopLink 10g (10.1.3)

See Also:

Serialized Form

Field Summary
- Fields inherited from class org.eclipse.persistence.platform.database.DatabasePlatform
  DEFAULT_VARCHAR_SIZE
- Fields inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  batchWritingMechanism, castSizeForVarcharParameter, classTypes, cursorCode, DEFAULT_MAX_BATCH_WRITING_SIZE, DEFAULT_PARAMETERIZED_MAX_BATCH_WRITING_SIZE, driverName, driverSupportsNationalCharacterVarying, fieldTypes, IS_VALID_TIMEOUT, isCastRequired, maxBatchWritingSize, partitioningCallback, pingSQL, printInnerJoinInWhereClause, printOuterJoinInWhereClause, shouldBindAllParameters, shouldBindLiterals, shouldBindPartialParameters, shouldCacheAllStatements, shouldCreateIndicesOnForeignKeys, shouldForceBindAllParameters, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldOptimizeDataConversion, shouldTrimStrings, statementCacheSize, storedProcedureTerminationToken, stringBindingSize, structConverters, supportsAutoCommit, tableCreationSuffix, transactionIsolation, typeConverters, useJDBCStoredProcedureSyntax, useNationalCharacterVarying, useRownumFiltering, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesStreamsForBinding, usesStringBinding
- Fields inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
  conversionManager, dataTypesConvertedFromAClass, dataTypesConvertedToAClass, defaultNativeSequenceToTable, defaultSeqenceAtNextValue, defaultSequence, endDelimiter, platformOperators, sequences, sequencesLock, startDelimiter, supportsReturnGeneratedKeys, tableQualifier, timestampQuery, uuidQuery

Constructor Summary

Constructors
Constructor Description

MySQLPlatform()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`appendCalendar(Calendar calendar, Writer writer)`	Appends an MySQL specific Timestamp, if usesNativeSQL is true otherwise use the ODBC format.
`protected void`	`appendDate(Date date, Writer writer)`	Appends an MySQL specific date if usesNativeSQL is true otherwise use the ODBC format.
`protected void`	`appendTime(Time time, Writer writer)`	Appends an MySQL specific time if usesNativeSQL is true otherwise use the ODBC format.
`protected void`	`appendTimestamp(Timestamp timestamp, Writer writer)`	Appends an MySQL specific Timestamp, if usesNativeSQL is true otherwise use the ODBC format.
`protected Hashtable<Class<?>,FieldTypeDefinition>`	`buildFieldTypes()`	Return the mapping of class types to database types for the schema framework.
`String`	`buildProcedureCallString(StoredProcedureCall call, AbstractSession session, AbstractRecord row)`	Return the stored procedure syntax for this platform.
`ValueReadQuery`	`buildSelectQueryForIdentity()`	INTERNAL: Build the identity query for native sequencing.
`boolean`	`canBatchWriteWithOptimisticLocking(DatabaseCall call)`	INTERNAL: Supports Batch Writing with Optimistic Locking.
`boolean`	`checkTableExists(DatabaseSessionImpl session, TableDefinition table, boolean suppressLogging)`	INTERNAL: Executes and evaluates query to check whether given table exists.
`int`	`computeMaxRowsForSQL(int firstResultIndex, int maxResults)`	INTERNAL: Use the JDBC maxResults and firstResultIndex setting to compute a value to use when limiting the results of a query in SQL.
`protected ExpressionOperator`	`currentDateOperator()`	INTERNAL: Create the current date operator for this platform.
`static ExpressionOperator`	`currentTime()`	INTERNAL: MySQL specific `currentTime` operator.
`static ExpressionOperator`	`currentTimeStamp()`	INTERNAL: MySQL specific `currentTimeStamp` operator.
`protected ExpressionOperator`	`dateToStringOperator()`	INTERNAL: Build MySQL equivalent to TO_CHAR.
`String`	`getConstraintDeletionString()`	INTERNAL: Used for constraint deletion.
`protected String`	`getCreateTempTableSqlPrefix()`	INTERNAL: MySQL temp table syntax, used for update-all, delete-all queries.
`String`	`getDropDatabaseSchemaString(String schema)`	Return the drop schema definition.
`String`	`getFunctionCallHeader()`	Used for stored function calls.
`String`	`getInOutputProcedureToken()`	INTERNAL: MySQL uses the INOUT keyword for this.
`int`	`getJDBCType(Class<?> javaType)`	Return the JDBC type for the Java type.
`String`	`getProcedureAsString()`	MySQL does not use the AS token.
`String`	`getProcedureBeginString()`	INTERNAL: MySQL requires BEGIN.
`String`	`getProcedureCallHeader()`	INTERNAL: Used for stored procedure calls.
`String`	`getProcedureCallTail()`	Used for sp calls.
`String`	`getProcedureEndString()`	INTERNAL: MySQL requires END.
`String`	`getSelectForUpdateString()`	INTERNAL: Used for pessimistic locking.
`protected DataReadQuery`	`getTableExistsQuery(TableDefinition table)`	INTERNAL: Returns query to check whether given table exists.
`ValueReadQuery`	`getTimestampQuery()`	INTERNAL: This method returns the query to select the timestamp from the server for MySQL.
`String`	`getUniqueConstraintDeletionString()`	INTERNAL: Used for unique constraint deletion.
`ValueReadQuery`	`getUUIDQuery()`	INTERNAL: This method returns the query to select the UUID from the server for MySQL.
`void`	`initializeConnectionData(Connection connection)`	INTERNAL: Allow initialization from the connection.
`protected void`	`initializePlatformOperators()`	Initialize any platform-specific operators.
`boolean`	`isForUpdateCompatibleWithDistinct()`	INTERNAL: Indicates whether SELECT DISTINCT ...
`boolean`	`isFractionalTimeSupported()`
`boolean`	`isMySQL()`	Answers whether platform is MySQL.
`protected ExpressionOperator`	`leftTrim2()`	INTERNAL: Build MySQL equivalent to LTRIM(string_exp, character).
`static ExpressionOperator`	`localDateTime()`	INTERNAL: MySQL specific `localDateTime` operator.
`static ExpressionOperator`	`localTime()`	INTERNAL: MySQL specific `localTime` operator.
`protected ExpressionOperator`	`logOperator()`	INTERNAL: Create the 10 based log operator for this platform.
`void`	`printFieldIdentityClause(Writer writer)`	INTERNAL: Append the receiver's field 'identity' constraint clause to a writer.
`void`	`printSQLSelectStatement(DatabaseCall call, ExpressionSQLPrinter printer, SQLSelectStatement statement)`	INTERNAL: Print the SQL representation of the statement on a stream, storing the fields in the DatabaseCall.
`void`	`printStoredFunctionReturnKeyWord(Writer writer)`	INTERNAL: Prints return keyword for StoredFunctionDefinition: CREATE FUNCTION StoredFunction_In (P_IN BIGINT) RETURN BIGINT The method was introduced because MySQL requires "RETURNS" instead: CREATE FUNCTION StoredFunction_In (P_IN BIGINT) RETURNS BIGINT
`boolean`	`requiresProcedureBrackets()`	Used for stored procedure creation: MySQL platforms need brackets around arguments declaration even if no arguments exist.
`boolean`	`requiresTableInIndexDropDDL()`	INTERNAL: Return if this database requires the table name when dropping an index.
`protected ExpressionOperator`	`rightTrim2()`	INTERNAL: Build MySQL equivalent to RTRIM(string_exp, character).
`boolean`	`shouldAlwaysUseTempStorageForModifyAll()`	INTERNAL: MySQL supports temp tables for update-all, delete-all queries.
`boolean`	`shouldPrintForUpdateClause()`	INTERNAL: MySQL FOR UPDATE clause has to be the last
`boolean`	`shouldPrintOutputTokenAtStart()`	INTERNAL: MySQL requires the direction at the start of the argument.
`boolean`	`shouldPrintStoredProcedureArgumentNameInCall()`	INTERNAL: MySQL stored procedure calls do not require the argument name be printed in the call string e.g.
`boolean`	`shouldUseJDBCOuterJoinSyntax()`	INTERNAL: JDBC defines an outer join syntax which many drivers do not support.
`boolean`	`supportsAutoConversionToNumericForArithmeticOperations()`	Some db allow VARCHAR db field to be used in arithmetic operations automatically converting them to numeric: UPDATE OL_PHONE SET PHONE_ORDER_VARCHAR = (PHONE_ORDER_VARCHAR + 1) WHERE ...
`boolean`	`supportsCountDistinctWithMultipleFields()`	INTERNAL: Indicates whether the platform supports the count distinct function with multiple fields.
`boolean`	`supportsGlobalTempTables()`	INTERNAL: MySQL supports temp tables for update-all, delete-all queries.
`boolean`	`supportsIdentity()`	INTERNAL: Indicates whether the platform supports identity.
`boolean`	`supportsIndividualTableLocking()`	INTERNAL: Indicates whether locking clause could be selectively applied only to some tables in a ReadQuery.
`boolean`	`supportsStoredFunctions()`
`protected ExpressionOperator`	`toCharOperator()`	INTERNAL: Build MySQL equivalent to TO_CHAR.
`protected ExpressionOperator`	`toDateOperator()`	INTERNAL: Build MySQL equivalent to TO_DATE.
`static ExpressionOperator`	`today()`	INTERNAL: MySQL specific `today` operator.
`protected ExpressionOperator`	`toNumberOperator()`	INTERNAL: Build MySQL equivalent to TO_NUMBER.
`void`	`writeDeleteFromTargetTableUsingTempTableSql(Writer writer, DatabaseTable table, DatabaseTable targetTable, Collection<DatabaseField> pkFields, Collection<DatabaseField> targetPkFields, DatasourcePlatform platform)`	INTERNAL: Writes MySQL specific SQL for accessing temp tables for delete-all queries.
`void`	`writeParameterMarker(Writer writer, ParameterExpression expression, AbstractRecord record, DatabaseCall call)`
`void`	`writeUpdateOriginalFromTempTableSql(Writer writer, DatabaseTable table, Collection<DatabaseField> pkFields, Collection<DatabaseField> assignedFields)`	INTERNAL: Writes MySQL specific SQL for accessing temp tables for update-all queries.

Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
addBatch, addStructConverter, allowBindingForSelectClause, allowsSizeInProcedureArguments, appendBoolean, appendByteArray, appendLiteralToCall, appendLiteralToCallWithBinding, appendNumber, appendParameter, appendParameterInternal, appendString, autoCommit, beginTransaction, buildBatchCriteria, buildBatchCriteriaForComplexId, buildCallWithReturning, buildClassTypes, buildCreateIndex, buildCreateIndex, buildDropIndex, buildDropIndex, buildSequenceObjectAlterIncrementWriter, buildSequenceObjectCreationWriter, buildSequenceObjectDeletionWriter, canBuildCallWithReturning, commitTransaction, convertToDatabaseType, copyInto, createArray, createArray, createPlatformDefaultSequence, createStruct, createStruct, createStruct, dontBindUpdateAllQueryUsingTempTables, executeBatch, executeStoredProcedure, freeTemporaryObject, getAssignmentString, getBatchBeginString, getBatchDelimiterString, getBatchEndString, getBatchRowCountAssignString, getBatchRowCountDeclareString, getBatchRowCountReturnString, getBatchWritingMechanism, getCastSizeForVarcharParameter, getClassTypes, getConnection, getConnectionUserName, getCreateDatabaseSchemaString, getCreateTempTableSqlBodyForTable, getCreateTempTableSqlSuffix, getCreateViewString, getCreationInOutputProcedureToken, getCreationOutputProcedureToken, getCursorCode, getCustomModifyValueForCall, getDefaultSequenceTableName, getDriverSupportsNVarChar, getDropCascadeString, getFieldTypeDefinition, getFieldTypes, getIndexNamePrefix, getInputProcedureToken, getJDBCOuterJoinString, getJDBCType, getJDBCTypeForSetNull, getJdbcTypeName, getJsonPlatform, getMaxBatchWritingSize, getMaxFieldNameSize, getMaxForeignKeyNameSize, getMaxIndexNameSize, getMaxUniqueKeyNameSize, getNoWaitString, getObjectFromResultSet, getOutputProcedureToken, getParameterValueFromDatabaseCall, getParameterValueFromDatabaseCall, getPartitioningCallback, getPingSQL, getProcedureArgument, getProcedureArgumentString, getProcedureOptionList, getQualifiedName, getQualifiedSequenceTableName, getRefValue, getRefValue, getSelectForUpdateNoWaitString, getSelectForUpdateOfString, getSelectForUpdateWaitString, getSequenceCounterFieldName, getSequenceNameFieldName, getSequencePreallocationSize, getSequenceTableName, getStatementCacheSize, getStoredProcedureParameterPrefix, getStoredProcedureTerminationToken, getStringBindingSize, getStructConverters, getTableCreationSuffix, getTempTableForTable, getTransactionIsolation, getTypeConverters, getUseNationalCharacterVaryingTypeForString, getVPDClearIdentifierQuery, getVPDCreationFunctionString, getVPDCreationPolicyString, getVPDDeletionString, getVPDSetIdentifierQuery, hasPartitioningCallback, initialize, isAlterSequenceObjectSupported, isCastRequired, isDynamicSQLRequiredForFunctions, isInformixOuterJoin, isJDBCExecuteCompliant, isLobCompatibleWithDistinct, isLockTimeoutException, isNullAllowedInSelectClause, isOutputAllowWithResultSet, isRowCountOutputParameterRequired, isXDBDocument, maximumNumericValues, minimumNumericValues, minimumTimeIncrement, prepareBatchStatement, printFieldNotNullClause, printFieldNullClause, printFieldTypeSize, printFieldTypeSize, printFieldUnique, printFieldUnique, printValuelist, printValuelist, registerOutputParameter, registerOutputParameter, registerOutputParameter, registerOutputParameter, requiresNamedPrimaryKeyConstraints, requiresProcedureCallBrackets, requiresProcedureCallOuputToken, requiresTypeNameToRegisterOutputParameter, requiresUniqueConstraintCreationOnTableCreate, retrieveFirstPrimaryKeyOrOne, rollbackTransaction, setBatchWritingMechanism, setCastSizeForVarcharParameter, setClassTypes, setCursorCode, setDriverName, setDriverSupportsNVarChar, setFieldTypes, setIsCastRequired, setMaxBatchWritingSize, setNullFromDatabaseField, setNullFromDatabaseField, setParameterValueInDatabaseCall, setParameterValueInDatabaseCall, setPartitioningCallback, setPingSQL, setPrintInnerJoinInWhereClause, setPrintOuterJoinInWhereClause, setSequenceCounterFieldName, setSequenceNameFieldName, setSequenceTableName, setShouldBindAllParameters, setShouldBindLiterals, setShouldBindPartialParameters, setShouldCacheAllStatements, setShouldCreateIndicesOnForeignKeys, setShouldForceBindAllParameters, setShouldForceFieldNamesToUpperCase, setShouldIgnoreCaseOnFieldComparisons, setShouldOptimizeDataConversion, setShouldTrimStrings, setShouldUseRownumFiltering, setStatementCacheSize, setStoredProcedureTerminationToken, setStringBindingSize, setSupportsAutoCommit, setTableCreationSuffix, setTransactionIsolation, setUseJDBCStoredProcedureSyntax, setUseNationalCharacterVaryingTypeForString, setUsesBatchWriting, setUsesByteArrayBinding, setUsesJDBCBatchWriting, setUsesNativeBatchWriting, setUsesNativeSQL, setUsesStreamsForBinding, setUsesStringBinding, shouldBindAllParameters, shouldBindLiterals, shouldBindPartialParameters, shouldCacheAllStatements, shouldCreateIndicesForPrimaryKeys, shouldCreateIndicesOnForeignKeys, shouldCreateIndicesOnUniqueKeys, shouldForceBindAllParameters, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldIgnoreException, shouldOptimizeDataConversion, shouldPrintAliasForUpdate, shouldPrintConstraintNameAfter, shouldPrintFieldIdentityClause, shouldPrintInnerJoinInWhereClause, shouldPrintInOutputTokenBeforeType, shouldPrintInputTokenAtStart, shouldPrintLockingClauseAfterWhereClause, shouldPrintOuterJoinInWhereClause, shouldPrintOutputTokenBeforeType, shouldPrintStoredProcedureVariablesAfterBeginString, shouldTempTableSpecifyPrimaryKeys, shouldTrimStrings, shouldUseCustomModifyForCall, shouldUseGetSetNString, shouldUseRownumFiltering, supportsANSIInnerJoinSyntax, supportsAutoCommit, supportsConnectionUserName, supportsDeleteOnCascade, supportsForeignKeyConstraints, supportsIndexes, supportsLocalTempTables, supportsLockingQueriesWithMultipleTables, supportsNestingOuterJoins, supportsOrderByParameters, supportsOuterJoinsWithBrackets, supportsPrimaryKeyConstraint, supportsTempTables, supportsUniqueColumns, supportsUniqueKeyConstraints, supportsVPD, supportsWaitForUpdate, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesSequenceTable, usesStreamsForBinding, usesStringBinding, wasFailureCommunicationBased, writeAddColumnClause, writeAutoAssignmentSetClause, writeAutoJoinWhereClause, writeCleanUpTempTableSql, writeCreateTempTableSql, writeFields, writeFieldsAutoClause, writeFieldsList, writeInsertIntoTableSql, writeJoinWhereClause, writeLOB, writeTableCreationSuffix

Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
addOperator, addSequence, addSequence, buildNativeCall, buildSelectQueryForIdentity, buildSelectQueryForSequenceObject, buildSelectQueryForSequenceObject, clone, convertObject, createConnectionCustomizer, createExpressionFor, getConversionManager, getDataTypesConvertedFrom, getDataTypesConvertedTo, getDefaultNativeSequenceToTable, getDefaultSeqenceAtNextValue, getDefaultSequence, getDefaultSequenceToWrite, getDriverVersion, getEndDelimiter, getINClauseLimit, getOperator, getPlatformOperators, getSelectSequenceQuery, getSequence, getSequences, getSequencesToWrite, getStartDelimiter, getTableQualifier, getTimestampFromServer, getUpdateSequenceQuery, hasDefaultSequence, initializeDefaultQueries, initIdentitySequences, isAccess, isAttunity, isCloudscape, isDB2, isDB2Z, isDBase, isDerby, isFirebird, isH2, isHANA, isHSQL, isInformix, isMariaDB, isMaxDB, isODBC, isOracle, isOracle12, isOracle23, isOracle9, isPervasive, isPointBase, isPostgreSQL, isSQLAnywhere, isSQLServer, isSybase, isSymfoware, isTimesTen, isTimesTen7, removeAllSequences, removeIdentitySequences, removeSequence, sequencesAfterCloneCleanup, setConversionManager, setDefaultNativeSequenceToTable, setDefaultSeqenceAtNextValue, setDefaultSequence, setEndDelimiter, setSelectSequenceNumberQuery, setSequencePreallocationSize, setSequences, setStartDelimiter, setSupportsReturnGeneratedKeys, setTableQualifier, setTimestampQuery, setUpdateSequenceQuery, setUUIDQuery, shouldNativeSequenceUseTransaction, shouldPrepare, shouldSelectDistinctIncludeOrderBy, shouldSelectIncludeOrderBy, supportsNativeSequenceNumbers, supportsReturnGeneratedKeys, supportsSequenceObjects, toString, usesPlatformDefaultSequence

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.persistence.internal.databaseaccess.Platform
connectionProperties

- Constructor Detail
  - MySQLPlatform
```
public MySQLPlatform()
```
- Method Detail
  - initializeConnectionData
```
public void initializeConnectionData(Connection connection)
                              throws SQLException
```
    Description copied from class: DatabasePlatform
    
    INTERNAL: Allow initialization from the connection.
    
    Overrides:
    
    initializeConnectionData in class DatabasePlatform
    
    Throws:
    
    SQLException
  - isFractionalTimeSupported
```
public boolean isFractionalTimeSupported()
```
  - appendDate
```
protected void appendDate(Date date,
                          Writer writer)
                   throws IOException
```
    Appends an MySQL specific date if usesNativeSQL is true otherwise use the ODBC format. Native FORMAT: 'YYYY-MM-DD'
    
    Overrides:
    
    appendDate in class DatabasePlatform
    
    Throws:
    
    IOException
  - appendTime
```
protected void appendTime(Time time,
                          Writer writer)
                   throws IOException
```
    Appends an MySQL specific time if usesNativeSQL is true otherwise use the ODBC format. Native FORMAT: 'HH:MM:SS'.
    
    Overrides:
    
    appendTime in class DatabasePlatform
    
    Throws:
    
    IOException
  - appendTimestamp
```
protected void appendTimestamp(Timestamp timestamp,
                               Writer writer)
                        throws IOException
```
    Appends an MySQL specific Timestamp, if usesNativeSQL is true otherwise use the ODBC format. Native Format: 'YYYY-MM-DD HH:MM:SS'
    
    Overrides:
    
    appendTimestamp in class DatabasePlatform
    
    Throws:
    
    IOException
  - appendCalendar
```
protected void appendCalendar(Calendar calendar,
                              Writer writer)
                       throws IOException
```
    Appends an MySQL specific Timestamp, if usesNativeSQL is true otherwise use the ODBC format. Native Format: 'YYYY-MM-DD HH:MM:SS'
    
    Overrides:
    
    appendCalendar in class DatabasePlatform
    
    Throws:
    
    IOException
  - buildFieldTypes
```
protected Hashtable<Class<?>,FieldTypeDefinition> buildFieldTypes()
```
    Return the mapping of class types to database types for the schema framework.
    
    Overrides:
    
    buildFieldTypes in class DatabasePlatform
  - getJDBCType
```
public int getJDBCType(Class<?> javaType)
```
    Description copied from class: DatabasePlatform
    
    Return the JDBC type for the Java type.
    
    Overrides:
    
    getJDBCType in class DatabasePlatform
  - buildSelectQueryForIdentity
```
public ValueReadQuery buildSelectQueryForIdentity()
```
    INTERNAL: Build the identity query for native sequencing.
    
    Overrides:
    
    buildSelectQueryForIdentity in class DatasourcePlatform
  - buildProcedureCallString
```
public String buildProcedureCallString(StoredProcedureCall call,
                                       AbstractSession session,
                                       AbstractRecord row)
```
    Return the stored procedure syntax for this platform.
    
    Overrides:
    
    buildProcedureCallString in class DatabasePlatform
  - computeMaxRowsForSQL
```
public int computeMaxRowsForSQL(int firstResultIndex,
                                int maxResults)
```
    INTERNAL: Use the JDBC maxResults and firstResultIndex setting to compute a value to use when limiting the results of a query in SQL. These limits tend to be used in two ways. 1. MaxRows is the index of the last row to be returned (like JDBC maxResults) 2. MaxRows is the number of rows to be returned MySQL uses case #2 and therefore the maxResults has to be altered based on the firstResultIndex
    
    Overrides:
    
    computeMaxRowsForSQL in class DatabasePlatform
    
    See Also:
    
    MySQLPlatform
  - canBatchWriteWithOptimisticLocking
```
public boolean canBatchWriteWithOptimisticLocking(DatabaseCall call)
```
    INTERNAL: Supports Batch Writing with Optimistic Locking.
    
    Overrides:
    
    canBatchWriteWithOptimisticLocking in class DatabasePlatform
  - getConstraintDeletionString
```
public String getConstraintDeletionString()
```
    INTERNAL: Used for constraint deletion.
    
    Overrides:
    
    getConstraintDeletionString in class DatabasePlatform
  - getUniqueConstraintDeletionString
```
public String getUniqueConstraintDeletionString()
```
    INTERNAL: Used for unique constraint deletion.
    
    Overrides:
    
    getUniqueConstraintDeletionString in class DatabasePlatform
  - getFunctionCallHeader
```
public String getFunctionCallHeader()
```
    Used for stored function calls.
    
    Overrides:
    
    getFunctionCallHeader in class DatabasePlatform
  - getProcedureCallTail
```
public String getProcedureCallTail()
```
    Used for sp calls.
    
    Overrides:
    
    getProcedureCallTail in class DatabasePlatform
  - getSelectForUpdateString
```
public String getSelectForUpdateString()
```
    INTERNAL: Used for pessimistic locking.
    
    Overrides:
    
    getSelectForUpdateString in class DatabasePlatform
  - isForUpdateCompatibleWithDistinct
```
public boolean isForUpdateCompatibleWithDistinct()
```
    Description copied from class: DatabasePlatform
    
    INTERNAL: Indicates whether SELECT DISTINCT ... FOR UPDATE is allowed by the platform (Oracle doesn't allow this).
    
    Overrides:
    
    isForUpdateCompatibleWithDistinct in class DatabasePlatform
  - getTimestampQuery
```
public ValueReadQuery getTimestampQuery()
```
    INTERNAL: This method returns the query to select the timestamp from the server for MySQL.
    
    Specified by:
    
    getTimestampQuery in interface Platform
    
    Overrides:
    
    getTimestampQuery in class DatasourcePlatform
  - isMySQL
```
public boolean isMySQL()
```
    Answers whether platform is MySQL.
    
    Specified by:
    
    isMySQL in interface Platform
    
    Overrides:
    
    isMySQL in class DatasourcePlatform
  - initializePlatformOperators
```
protected void initializePlatformOperators()
```
    Initialize any platform-specific operators.
    
    Overrides:
    
    initializePlatformOperators in class DatasourcePlatform
  - currentTimeStamp
```
public static ExpressionOperator currentTimeStamp()
```
    INTERNAL: MySQL specific currentTimeStamp operator.
    
    Returns:
    
    new ExpressionOperator instance with currentTimeStamp
  - today
```
public static ExpressionOperator today()
```
    INTERNAL: MySQL specific today operator.
    
    Returns:
    
    new ExpressionOperator instance with today
  - currentTime
```
public static ExpressionOperator currentTime()
```
    INTERNAL: MySQL specific currentTime operator.
    
    Returns:
    
    new ExpressionOperator instance with currentTime
  - localTime
```
public static ExpressionOperator localTime()
```
    INTERNAL: MySQL specific localTime operator.
    
    Returns:
    
    new ExpressionOperator instance with localTime
  - localDateTime
```
public static ExpressionOperator localDateTime()
```
    INTERNAL: MySQL specific localDateTime operator.
    
    Returns:
    
    new ExpressionOperator instance with localDateTime
  - logOperator
```
protected ExpressionOperator logOperator()
```
    INTERNAL: Create the 10 based log operator for this platform.
  - toNumberOperator
```
protected ExpressionOperator toNumberOperator()
```
    INTERNAL: Build MySQL equivalent to TO_NUMBER.
  - toDateOperator
```
protected ExpressionOperator toDateOperator()
```
    INTERNAL: Build MySQL equivalent to TO_DATE.
  - toCharOperator
```
protected ExpressionOperator toCharOperator()
```
    INTERNAL: Build MySQL equivalent to TO_CHAR.
  - dateToStringOperator
```
protected ExpressionOperator dateToStringOperator()
```
    INTERNAL: Build MySQL equivalent to TO_CHAR.
  - leftTrim2
```
protected ExpressionOperator leftTrim2()
```
    INTERNAL: Build MySQL equivalent to LTRIM(string_exp, character). MySQL: TRIM(LEADING character FROM string_exp)
  - rightTrim2
```
protected ExpressionOperator rightTrim2()
```
    INTERNAL: Build MySQL equivalent to RTRIM(string_exp, character). MySQL: TRIM(TRAILING character FROM string_exp)
  - currentDateOperator
```
protected ExpressionOperator currentDateOperator()
```
    INTERNAL: Create the current date operator for this platform.
  - printFieldIdentityClause
```
public void printFieldIdentityClause(Writer writer)
                              throws ValidationException
```
    INTERNAL: Append the receiver's field 'identity' constraint clause to a writer.
    
    Overrides:
    
    printFieldIdentityClause in class DatabasePlatform
    
    Throws:
    
    ValidationException
  - shouldUseJDBCOuterJoinSyntax
```
public boolean shouldUseJDBCOuterJoinSyntax()
```
    INTERNAL: JDBC defines an outer join syntax which many drivers do not support. So we normally avoid it.
    
    Overrides:
    
    shouldUseJDBCOuterJoinSyntax in class DatabasePlatform
  - supportsIdentity
```
public boolean supportsIdentity()
```
    INTERNAL: Indicates whether the platform supports identity. MySQL supports native sequencing through AUTO_INCREMENT field types.
    
    Overrides:
    
    supportsIdentity in class DatasourcePlatform
  - supportsCountDistinctWithMultipleFields
```
public boolean supportsCountDistinctWithMultipleFields()
```
    INTERNAL: Indicates whether the platform supports the count distinct function with multiple fields.
    
    Overrides:
    
    supportsCountDistinctWithMultipleFields in class DatabasePlatform
  - requiresTableInIndexDropDDL
```
public boolean requiresTableInIndexDropDDL()
```
    INTERNAL: Return if this database requires the table name when dropping an index.
    
    Overrides:
    
    requiresTableInIndexDropDDL in class DatabasePlatform
  - supportsGlobalTempTables
```
public boolean supportsGlobalTempTables()
```
    INTERNAL: MySQL supports temp tables for update-all, delete-all queries.
    
    Overrides:
    
    supportsGlobalTempTables in class DatabasePlatform
  - supportsIndividualTableLocking
```
public boolean supportsIndividualTableLocking()
```
    INTERNAL: Indicates whether locking clause could be selectively applied only to some tables in a ReadQuery. Example: the following locks the rows in SALARY table, doesn't lock the rows in EMPLOYEE table: on Oracle platform (method returns true): SELECT t0.EMP_ID..., t1.SALARY FROM EMPLOYEE t0, SALARY t1 WHERE ... FOR UPDATE t1.SALARY on SQLServer platform (method returns true): SELECT t0.EMP_ID..., t1.SALARY FROM EMPLOYEE t0, SALARY t1 WITH (UPDLOCK) WHERE ...
    
    Overrides:
    
    supportsIndividualTableLocking in class DatabasePlatform
  - supportsStoredFunctions
```
public boolean supportsStoredFunctions()
```
    Overrides:
    
    supportsStoredFunctions in class DatabasePlatform
  - supportsAutoConversionToNumericForArithmeticOperations
```
public boolean supportsAutoConversionToNumericForArithmeticOperations()
```
    Some db allow VARCHAR db field to be used in arithmetic operations automatically converting them to numeric: UPDATE OL_PHONE SET PHONE_ORDER_VARCHAR = (PHONE_ORDER_VARCHAR + 1) WHERE ... SELECT ... WHERE ... t0.MANAGED_ORDER_VARCHAR BETWEEN 1 AND 4 ...
    
    Overrides:
    
    supportsAutoConversionToNumericForArithmeticOperations in class DatabasePlatform
  - getCreateTempTableSqlPrefix
```
protected String getCreateTempTableSqlPrefix()
```
    INTERNAL: MySQL temp table syntax, used for update-all, delete-all queries.
    
    Overrides:
    
    getCreateTempTableSqlPrefix in class DatabasePlatform
  - getDropDatabaseSchemaString
```
public String getDropDatabaseSchemaString(String schema)
```
    Return the drop schema definition. Subclasses should override as needed.
    
    Overrides:
    
    getDropDatabaseSchemaString in class DatabasePlatform
  - shouldAlwaysUseTempStorageForModifyAll
```
public boolean shouldAlwaysUseTempStorageForModifyAll()
```
    INTERNAL: MySQL supports temp tables for update-all, delete-all queries.
    
    Overrides:
    
    shouldAlwaysUseTempStorageForModifyAll in class DatabasePlatform
  - shouldPrintStoredProcedureArgumentNameInCall
```
public boolean shouldPrintStoredProcedureArgumentNameInCall()
```
    INTERNAL: MySQL stored procedure calls do not require the argument name be printed in the call string e.g. call MyStoredProc(?) instead of call MyStoredProc(myvariable = ?)
    
    Overrides:
    
    shouldPrintStoredProcedureArgumentNameInCall in class DatabasePlatform
  - shouldPrintForUpdateClause
```
public boolean shouldPrintForUpdateClause()
```
    INTERNAL: MySQL FOR UPDATE clause has to be the last
    
    Overrides:
    
    shouldPrintForUpdateClause in class DatabasePlatform
  - getInOutputProcedureToken
```
public String getInOutputProcedureToken()
```
    INTERNAL: MySQL uses the INOUT keyword for this.
    
    Overrides:
    
    getInOutputProcedureToken in class DatabasePlatform
  - getProcedureAsString
```
public String getProcedureAsString()
```
    MySQL does not use the AS token.
    
    Overrides:
    
    getProcedureAsString in class DatabasePlatform
  - shouldPrintOutputTokenAtStart
```
public boolean shouldPrintOutputTokenAtStart()
```
    INTERNAL: MySQL requires the direction at the start of the argument.
    
    Overrides:
    
    shouldPrintOutputTokenAtStart in class DatabasePlatform
  - getProcedureCallHeader
```
public String getProcedureCallHeader()
```
    INTERNAL: Used for stored procedure calls.
    
    Overrides:
    
    getProcedureCallHeader in class DatabasePlatform
  - getProcedureBeginString
```
public String getProcedureBeginString()
```
    INTERNAL: MySQL requires BEGIN.
    
    Overrides:
    
    getProcedureBeginString in class DatabasePlatform
  - getProcedureEndString
```
public String getProcedureEndString()
```
    INTERNAL: MySQL requires END.
    
    Overrides:
    
    getProcedureEndString in class DatabasePlatform
  - writeUpdateOriginalFromTempTableSql
```
public void writeUpdateOriginalFromTempTableSql(Writer writer,
                                                DatabaseTable table,
                                                Collection<DatabaseField> pkFields,
                                                Collection<DatabaseField> assignedFields)
                                         throws IOException
```
    INTERNAL: Writes MySQL specific SQL for accessing temp tables for update-all queries.
    
    Overrides:
    
    writeUpdateOriginalFromTempTableSql in class DatabasePlatform
    
    Parameters:
    
    writer - for writing the sql
    
    table - is original table for which temp table is created.
    
    pkFields - primary key fields for the original table.
    
    assignedFields - fields to be assigned a new value.
    
    Throws:
    
    IOException
  - writeDeleteFromTargetTableUsingTempTableSql
```
public void writeDeleteFromTargetTableUsingTempTableSql(Writer writer,
                                                        DatabaseTable table,
                                                        DatabaseTable targetTable,
                                                        Collection<DatabaseField> pkFields,
                                                        Collection<DatabaseField> targetPkFields,
                                                        DatasourcePlatform platform)
                                                 throws IOException
```
    INTERNAL: Writes MySQL specific SQL for accessing temp tables for delete-all queries.
    
    Overrides:
    
    writeDeleteFromTargetTableUsingTempTableSql in class DatabasePlatform
    
    Parameters:
    
    writer - for writing the sql
    
    table - is original table for which temp table is created.
    
    targetTable - is a table from which to delete.
    
    pkFields - primary key fields for the original table.
    
    targetPkFields - primary key fields for the target table.
    
    Throws:
    
    IOException
  - writeParameterMarker
```
public void writeParameterMarker(Writer writer,
                                 ParameterExpression expression,
                                 AbstractRecord record,
                                 DatabaseCall call)
                          throws IOException
```
    Overrides:
    
    writeParameterMarker in class DatabasePlatform
    
    Throws:
    
    IOException
  - printSQLSelectStatement
```
public void printSQLSelectStatement(DatabaseCall call,
                                    ExpressionSQLPrinter printer,
                                    SQLSelectStatement statement)
```
    Description copied from class: DatabasePlatform
    
    INTERNAL: Print the SQL representation of the statement on a stream, storing the fields in the DatabaseCall.
    
    Overrides:
    
    printSQLSelectStatement in class DatabasePlatform
  - requiresProcedureBrackets
```
public boolean requiresProcedureBrackets()
```
    Used for stored procedure creation: MySQL platforms need brackets around arguments declaration even if no arguments exist.
    
    Overrides:
    
    requiresProcedureBrackets in class DatabasePlatform
  - printStoredFunctionReturnKeyWord
```
public void printStoredFunctionReturnKeyWord(Writer writer)
                                      throws IOException
```
    INTERNAL: Prints return keyword for StoredFunctionDefinition: CREATE FUNCTION StoredFunction_In (P_IN BIGINT) RETURN BIGINT The method was introduced because MySQL requires "RETURNS" instead: CREATE FUNCTION StoredFunction_In (P_IN BIGINT) RETURNS BIGINT
    
    Overrides:
    
    printStoredFunctionReturnKeyWord in class DatabasePlatform
    
    Throws:
    
    IOException
  - getTableExistsQuery
```
protected DataReadQuery getTableExistsQuery(TableDefinition table)
```
    INTERNAL: Returns query to check whether given table exists. Query execution returns a row when table exists or empty result otherwise.
    
    Overrides:
    
    getTableExistsQuery in class DatabasePlatform
    
    Parameters:
    
    table - database table meta-data
    
    Returns:
    
    query to check whether given table exists
  - checkTableExists
```
public boolean checkTableExists(DatabaseSessionImpl session,
                                TableDefinition table,
                                boolean suppressLogging)
```
    INTERNAL: Executes and evaluates query to check whether given table exists. Returned value depends on returned result set being empty or not.
    
    Overrides:
    
    checkTableExists in class DatabasePlatform
    
    Parameters:
    
    session - current database session
    
    table - database table meta-data
    
    suppressLogging - whether to suppress logging during query execution
    
    Returns:
    
    value of true if given table exists or false otherwise
  - getUUIDQuery
```
public ValueReadQuery getUUIDQuery()
```
    INTERNAL: This method returns the query to select the UUID from the server for MySQL.
    
    Specified by:
    
    getUUIDQuery in interface Platform
    
    Overrides:
    
    getUUIDQuery in class DatasourcePlatform

Class MySQLPlatform

Field Summary

Fields inherited from class org.eclipse.persistence.platform.database.DatabasePlatform

Fields inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Fields inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

Constructor Summary

Method Summary

Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

Methods inherited from class java.lang.Object

Methods inherited from interface org.eclipse.persistence.internal.databaseaccess.Platform

Constructor Detail

MySQLPlatform

Method Detail

initializeConnectionData

isFractionalTimeSupported

appendDate

appendTime

appendTimestamp

appendCalendar

buildFieldTypes

getJDBCType

buildSelectQueryForIdentity

buildProcedureCallString

computeMaxRowsForSQL

canBatchWriteWithOptimisticLocking

getConstraintDeletionString

getUniqueConstraintDeletionString

getFunctionCallHeader

getProcedureCallTail

getSelectForUpdateString

isForUpdateCompatibleWithDistinct

getTimestampQuery

isMySQL

initializePlatformOperators

currentTimeStamp

today

currentTime

localTime

localDateTime

logOperator

toNumberOperator

toDateOperator

toCharOperator

dateToStringOperator

leftTrim2

rightTrim2

currentDateOperator

printFieldIdentityClause

shouldUseJDBCOuterJoinSyntax

supportsIdentity

supportsCountDistinctWithMultipleFields

requiresTableInIndexDropDDL

supportsGlobalTempTables

supportsIndividualTableLocking

supportsStoredFunctions

supportsAutoConversionToNumericForArithmeticOperations

getCreateTempTableSqlPrefix

getDropDatabaseSchemaString

shouldAlwaysUseTempStorageForModifyAll

shouldPrintStoredProcedureArgumentNameInCall

shouldPrintForUpdateClause

getInOutputProcedureToken

getProcedureAsString

shouldPrintOutputTokenAtStart

getProcedureCallHeader

getProcedureBeginString

getProcedureEndString

writeUpdateOriginalFromTempTableSql

writeDeleteFromTargetTableUsingTempTableSql

writeParameterMarker

printSQLSelectStatement

requiresProcedureBrackets

printStoredFunctionReturnKeyWord

getTableExistsQuery

checkTableExists

getUUIDQuery