wt.dataservice
Class AbstractDatastore

java.lang.Object
  wt.dataservice.AbstractDatastore

All Implemented Interfaces:

Datastore

Direct Known Subclasses:

Oracle, SQLServer

public abstract class AbstractDatastore

extends Object

implements Datastore

Constructor Summary

AbstractDatastore()

Method Summary

void	buildCreateTemporaryTableDDL(String a_tableName, ColumnDescriptor[] a_columns, StringBuffer a_buffer) This method builds a DDL string for creating a temporary table.
protected abstract String	getCreateTemporaryTableDDLPrefix() This method returns the intial portion of the Create Temporary Table DDL statement.
String	getDatastoreColumnNameExpression(String a_expression) This method converts the SQL Functions in the expression with datastore specific Functions Supported API: false
private String	getFullSubFunctionExpression(String a_expression)
String	getInFixExpression(String a_expression) This method returns the datastore specific infix expression.
int	getType(Class a_javaType) This method returns a java.sql.Types value that the specified javaType maps to.
private String	replace(String a_expression, String old_string, String new_string)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface wt.dataservice.Datastore

getDateFormat, getDateJavaFormat, getDateSQLFormat, getMaxLength, getSQLFunctionName, getSQLTypeString, getTimeJavaFormat, getTimeSQLFormat, getTimeStampJavaFormat, getTimeStampSQLFormat, getUserDefinedNameExpression, getUtilDateJavaParse, isInfix

Constructor Detail

AbstractDatastore

public AbstractDatastore()

Method Detail

getInFixExpression

public String getInFixExpression(String a_expression)

This method returns the datastore specific infix expression.

Supported API: false

Specified by:

getInFixExpression in interface Datastore

Parameters:

a_expression - column name expression

Returns:

java.lang.String datastore specific infix expression.

getDatastoreColumnNameExpression

public String getDatastoreColumnNameExpression(String a_expression)

This method converts the SQL Functions in the expression with datastore specific Functions

Supported API: false

Specified by:

getDatastoreColumnNameExpression in interface Datastore

Parameters:

a_expression - column name expression

Returns:

java.lang.String datastore specific column name expression.

getFullSubFunctionExpression

private String getFullSubFunctionExpression(String a_expression)

replace

private String replace(String a_expression,
                       String old_string,
                       String new_string)

getType

public int getType(Class a_javaType)

This method returns a java.sql.Types value that the specified javaType maps to. If there is no mapping, then Types.OTHER is returned.

Supported API: false

Specified by:

getType in interface Datastore

Parameters:

a_javaType - The java type to get the SQL mapping for.

Returns:

java.sql.Types constant indicating the mapping.

buildCreateTemporaryTableDDL

public void buildCreateTemporaryTableDDL(String a_tableName,
                                         ColumnDescriptor[] a_columns,
                                         StringBuffer a_buffer)
                                  throws WTException

This method builds a DDL string for creating a temporary table.

Supported API: false

Specified by:

buildCreateTemporaryTableDDL in interface Datastore

Parameters:

a_tableName - the name of the temporary table.

a_columns - the colums of the temporary table.

a_buffer - String buffer to build the DDL into.

Returns:

DDL CREATE statement

Throws:

WTException

getCreateTemporaryTableDDLPrefix

protected abstract String getCreateTemporaryTableDDLPrefix()

This method returns the intial portion of the Create Temporary Table DDL statement.

Supported API: false