com.googlecode.jdbw.server
Class DefaultSQLDialect

java.lang.Object
  com.googlecode.jdbw.server.DefaultSQLDialect

All Implemented Interfaces:

SQLDialect

Direct Known Subclasses:

H2SQLDialect, SybaseASESQLDialect

public class DefaultSQLDialect
extends Object
implements SQLDialect

A default implementation of SQLDialect providing some functionality which is common to most database servers.

Author:

Martin Berglund

Constructor Summary

DefaultSQLDialect()

Method Summary

protected Object	createExampleObject(int sqlType)
String	escapeIdentifier(String identifier) Takes the name of a database object (table, column, etc) and returns the name wrapped in characters that marks it's an identifier.
String	escapeString(String string) Returns a string with all special characters replaced with their proper escape sequences.
protected String	formatBinary(Object value)
protected String	formatBoolean(Object value)
String	formatDate(Date date) Formats a java Date into the preferred date string format for this database server type, probably YYYY-MM-DD
protected String	formatDate(Object value)
String	formatDateTime(Date date) Formats a java Date into the preferred date time string format for this database server type, probably YYYY-MM-DD HH:MM:SS.ZZZ
protected String	formatDatetime(Object value)
protected String	formatDecimal(Object value)
protected String	formatFloatingPoint(Object value)
protected String	formatInteger(Object value)
protected String	formatString(Object value)
String	formatTime(Date date) Formats a java Date into the preferred time string format for this database server type, probably HH:MM:SS.ZZZ
protected String	formatTime(Object value)
String	formatValue(Object value, int targetType) Formats a generic object into a String that can be inserted into a dynamically constructed SQL statement.
String[]	getCreateTableStatement(String schemaName, String name, List<Column> columns, List<Index> indexes)
String	getDropTableStatement(String catalog, String schema, String tableName)
String	getSingleLineCommentPrefix()
static boolean	isBigDecimal(int sqlType)
static boolean	isBinary(int sqlType)
static boolean	isBoolean(int sqlType)
boolean	isCompatible(int fromSqlType, int toSqlType)
static boolean	isDate(int sqlType)
static boolean	isDatetime(int sqlType)
static boolean	isFloatingPoint(int sqlType)
static boolean	isInteger(int sqlType)
static boolean	isString(int sqlType)
static boolean	isTime(int sqlType)
Object	safeType(Column targetColumn, Object object) Attempts to convert a particular value to an acceptable format.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultSQLDialect

public DefaultSQLDialect()

Method Detail

escapeString

public String escapeString(String string)

Description copied from interface: SQLDialect

Returns a string with all special characters replaced with their proper escape sequences. You don't need to do this for strings passed in as parameters, since the JDBC driver will do it for you.

Specified by:

escapeString in interface SQLDialect

Parameters:

string - String to convert

Returns:

The original string with special characters escaped

escapeIdentifier

public String escapeIdentifier(String identifier)

Description copied from interface: SQLDialect

Takes the name of a database object (table, column, etc) and returns the name wrapped in characters that marks it's an identifier. Use this if, for example, your column names may be colliding with keywords on the server.

Specified by:

escapeIdentifier in interface SQLDialect

Parameters:

identifier - string to wrapp

Returns:

The input string wrapped as an identifier

formatDateTime

public String formatDateTime(Date date)

Description copied from interface: SQLDialect

Formats a java Date into the preferred date time string format for this database server type, probably YYYY-MM-DD HH:MM:SS.ZZZ

Specified by:

formatDateTime in interface SQLDialect

Returns:

Date formatted as a string

formatDate

public String formatDate(Date date)

Description copied from interface: SQLDialect

Formats a java Date into the preferred date string format for this database server type, probably YYYY-MM-DD

Specified by:

formatDate in interface SQLDialect

Parameters:

date - Date to format

Returns:

Date formatted as a string

formatTime

public String formatTime(Date date)

Description copied from interface: SQLDialect

Formats a java Date into the preferred time string format for this database server type, probably HH:MM:SS.ZZZ

Specified by:

formatTime in interface SQLDialect

Parameters:

date - Date to format

Returns:

Date formatted as a string

formatValue

public String formatValue(Object value,
                          int targetType)

Description copied from interface: SQLDialect

Formats a generic object into a String that can be inserted into a dynamically constructed SQL statement. You'll need to supply the type you want the value to be in the database context through the targetType parameter. Note: Throws IllegalArgumentException is the objects cannot be formatted

Specified by:

formatValue in interface SQLDialect

Parameters:

value - Value to be formatted

targetType - java.sql.Types constant of the type you want to format the value as

Returns:

String with the value formatted as the specified type

getCreateTableStatement

public String[] getCreateTableStatement(String schemaName,
                                        String name,
                                        List<Column> columns,
                                        List<Index> indexes)

Specified by:

getCreateTableStatement in interface SQLDialect

getDropTableStatement

public String getDropTableStatement(String catalog,
                                    String schema,
                                    String tableName)

Specified by:

getDropTableStatement in interface SQLDialect

getSingleLineCommentPrefix

public String getSingleLineCommentPrefix()

Specified by:

getSingleLineCommentPrefix in interface SQLDialect

Returns:

What to put in front of a line to comment it out

isCompatible

public boolean isCompatible(int fromSqlType,
                            int toSqlType)

Specified by:

isCompatible in interface SQLDialect

Returns:

True if this database can convert data of type fromSqlType to type toSqlType

safeType

public Object safeType(Column targetColumn,
                       Object object)

Description copied from interface: SQLDialect

Attempts to convert a particular value to an acceptable format. Given a column on the server and the value we want to put into this column, the method will try to convert the value into a format that is compatible with the column.

Specified by:

safeType in interface SQLDialect

Parameters:

targetColumn - Column we want to insert into

object - Object to insert

Returns:

A compatible value for the target column

createExampleObject

protected Object createExampleObject(int sqlType)

isBigDecimal

public static boolean isBigDecimal(int sqlType)

isBoolean

public static boolean isBoolean(int sqlType)

isFloatingPoint

public static boolean isFloatingPoint(int sqlType)

isString

public static boolean isString(int sqlType)

isInteger

public static boolean isInteger(int sqlType)

isDatetime

public static boolean isDatetime(int sqlType)

isDate

public static boolean isDate(int sqlType)

isTime

public static boolean isTime(int sqlType)

isBinary

public static boolean isBinary(int sqlType)

formatDecimal

protected String formatDecimal(Object value)

formatBoolean

protected String formatBoolean(Object value)

formatFloatingPoint

protected String formatFloatingPoint(Object value)

formatString

protected String formatString(Object value)

formatInteger

protected String formatInteger(Object value)

formatDatetime

protected String formatDatetime(Object value)

formatDate

protected String formatDate(Object value)

formatTime

protected String formatTime(Object value)

formatBinary

protected String formatBinary(Object value)