Top Description Fields Constructors Methods
org.eclipse.persistence.platform.database

public Class DBasePlatform

extends DatabasePlatform
Class Inheritance
Imports
java.io.*, java.sql.CallableStatement, .PreparedStatement, .SQLException, java.util.*, org.eclipse.persistence.internal.databaseaccess.FieldTypeDefinition, org.eclipse.persistence.internal.sessions.AbstractSession

Purpose: Provides DBase specific behavior.

Responsibilities:

Since
TOPLink/Java 1.0

Field Summary

Inherited from org.eclipse.persistence.platform.database.DatabasePlatform:
DEFAULT_VARCHAR_SIZE

Constructor Summary

AccessConstructor and Description
public
DBasePlatform()

Default constructor.

Method Summary

Modifier and TypeMethod and Description
protected Hashtable<Class<?>, FieldTypeDefinition>
buildFieldTypes()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.buildFieldTypes.

Return the mapping of class types to database types for the schema framework.
public Object
convertToDatabaseType(Object value)

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.convertToDatabaseType.

INTERNAL We support more primitive than JDBC does so we must do conversion before printing or binding.
public int
getMaxFieldNameSize()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.getMaxFieldNameSize.

INTERNAL: returns the maximum number of characters that can be used in a field name on this platform.
public String
getSelectForUpdateString()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.getSelectForUpdateString.

Most database support a syntax.
public boolean
isDBase()

Overrides org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform.isDBase.

Implements org.eclipse.persistence.internal.databaseaccess.Platform.isDBase.

public Hashtable<Class<? extends Number>, ? super Number>
maximumNumericValues()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.maximumNumericValues.

Builds a table of minimum numeric values keyed on java class.
public Hashtable<Class<? extends Number>, ? super Number>
minimumNumericValues()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.minimumNumericValues.

Builds a table of minimum numeric values keyed on java class.
public void
printFieldNotNullClause(Writer writer)

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.printFieldNotNullClause.

Append the receiver's field 'NOT NULL' constraint clause to a writer.
public void
setParameterValueInDatabaseCall(Object parameter, PreparedStatement statement, int index, AbstractSession session)

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.setParameterValueInDatabaseCall.

INTERNAL: DBase does not support Time/Timestamp so we must map to strings.
public void
setParameterValueInDatabaseCall(Object parameter, CallableStatement statement, String name, AbstractSession session)

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.setParameterValueInDatabaseCall.

INTERNAL: DBase does not support Time/Timestamp so we must map to strings.
public boolean
shouldUseJDBCOuterJoinSyntax()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.shouldUseJDBCOuterJoinSyntax.

JDBC defines and outer join syntax, many drivers do not support this.
public boolean
supportsForeignKeyConstraints()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.supportsForeignKeyConstraints.

public boolean
supportsPrimaryKeyConstraint()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.supportsPrimaryKeyConstraint.

Constructor Detail

DBasePlatformback to summary
public DBasePlatform()

Default constructor.

Method Detail

buildFieldTypesback to summary
protected Hashtable<Class<?>, FieldTypeDefinition> buildFieldTypes()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.buildFieldTypes.

Doc from org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.buildFieldTypes.

Return the mapping of class types to database types for the schema framework.

Annotations
@Override
convertToDatabaseTypeback to summary
public Object convertToDatabaseType(Object value)

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.convertToDatabaseType.

INTERNAL We support more primitive than JDBC does so we must do conversion before printing or binding.

Annotations
@Override
getMaxFieldNameSizeback to summary
public int getMaxFieldNameSize()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.getMaxFieldNameSize.

INTERNAL: returns the maximum number of characters that can be used in a field name on this platform.

Annotations
@Override
getSelectForUpdateStringback to summary
public String getSelectForUpdateString()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.getSelectForUpdateString.

Doc from org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.getSelectForUpdateString.

Most database support a syntax. although don't actually lock the row. Some require the OF some don't like it.

Annotations
@Override
isDBaseback to summary
public boolean isDBase()

Overrides org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform.isDBase.

Implements org.eclipse.persistence.internal.databaseaccess.Platform.isDBase.

Annotations
@Override
maximumNumericValuesback to summary
public Hashtable<Class<? extends Number>, ? super Number> maximumNumericValues()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.maximumNumericValues.

Builds a table of minimum numeric values keyed on java class. This is used for type testing but might also be useful to end users attempting to sanitize values.

Note

BigInteger & BigDecimal minimums are dependent upon their precision & Scale

Annotations
@Override
minimumNumericValuesback to summary
public Hashtable<Class<? extends Number>, ? super Number> minimumNumericValues()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.minimumNumericValues.

Builds a table of minimum numeric values keyed on java class. This is used for type testing but might also be useful to end users attempting to sanitize values.

Note

BigInteger & BigDecimal minimums are dependent upon their precision & Scale

Annotations
@Override
printFieldNotNullClauseback to summary
public void printFieldNotNullClause(Writer writer)

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.printFieldNotNullClause.

Append the receiver's field 'NOT NULL' constraint clause to a writer.

Annotations
@Override
setParameterValueInDatabaseCallback to summary
public void setParameterValueInDatabaseCall(Object parameter, PreparedStatement statement, int index, AbstractSession session) throws SQLException

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.setParameterValueInDatabaseCall.

INTERNAL: DBase does not support Time/Timestamp so we must map to strings.

Annotations
@Override
setParameterValueInDatabaseCallback to summary
public void setParameterValueInDatabaseCall(Object parameter, CallableStatement statement, String name, AbstractSession session) throws SQLException

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.setParameterValueInDatabaseCall.

INTERNAL: DBase does not support Time/Timestamp so we must map to strings.

Annotations
@Override
shouldUseJDBCOuterJoinSyntaxback to summary
public boolean shouldUseJDBCOuterJoinSyntax()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.shouldUseJDBCOuterJoinSyntax.

JDBC defines and outer join syntax, many drivers do not support this. So we normally avoid it.

Annotations
@Override
supportsForeignKeyConstraintsback to summary
public boolean supportsForeignKeyConstraints()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.supportsForeignKeyConstraints.

Annotations
@Override
supportsPrimaryKeyConstraintback to summary
public boolean supportsPrimaryKeyConstraint()

Overrides org.eclipse.persistence.internal.databaseaccess.DatabasePlatform.supportsPrimaryKeyConstraint.

Annotations
@Override