Java Doc for DataTypeUtilities.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » iapi » types » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.iapi.types   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.derby.iapi.types.DataTypeUtilities DataTypeUtilities abstract public class DataTypeUtilities (Code) A set of static utility methods for data types. author:    djd Method Summary public static  int computeMaxWidth(int precision, int scale)      Compute the maximum width (column display width) of a decimal or numeric data value, given its precision and scale. Parameters:   precision - The precision (number of digits) of the data value. Parameters:   scale - The number of fractional digits (digits to the right of the decimal point). public static  int getColumnDisplaySize(DataTypeDescriptor dtd)      Gets the display width of a column of a given type. public static  int getColumnDisplaySize(int typeId, int storageLength)      public static  int getDigitPrecision(DataTypeDescriptor dtd)      Get the precision of the datatype, in decimal digits This is used by EmbedResultSetMetaData. public static  int getPrecision(DataTypeDescriptor dtd)      Get the precision of the datatype. public static  boolean isCaseSensitive(DataTypeDescriptor dtd)      Is the data type case sensitive. public static  boolean isCurrency(DataTypeDescriptor dtd)      Is the data type currency. public static  int isNullable(DataTypeDescriptor dtd)      Is the data type nullable. public static  boolean isSigned(DataTypeDescriptor dtd)      Is the data type signed. Method Detail computeMaxWidth public static int computeMaxWidth(int precision, int scale)(Code) Compute the maximum width (column display width) of a decimal or numeric data value, given its precision and scale. Parameters:   precision - The precision (number of digits) of the data value. Parameters:   scale - The number of fractional digits (digits to the right of the decimal point). The maximum number of chracters needed to display the value. getColumnDisplaySize public static int getColumnDisplaySize(DataTypeDescriptor dtd)(Code) Gets the display width of a column of a given type. Parameters:   dtd - data type descriptor associated column display width getColumnDisplaySize public static int getColumnDisplaySize(int typeId, int storageLength)(Code) getDigitPrecision public static int getDigitPrecision(DataTypeDescriptor dtd)(Code) Get the precision of the datatype, in decimal digits This is used by EmbedResultSetMetaData. Parameters:   dtd - data type descriptor getPrecision public static int getPrecision(DataTypeDescriptor dtd)(Code) Get the precision of the datatype. Parameters:   dtd - data type descriptor isCaseSensitive public static boolean isCaseSensitive(DataTypeDescriptor dtd)(Code) Is the data type case sensitive. Parameters:   dtd - data type descriptor isCurrency public static boolean isCurrency(DataTypeDescriptor dtd)(Code) Is the data type currency. Parameters:   dtd - data type descriptor isNullable public static int isNullable(DataTypeDescriptor dtd)(Code) Is the data type nullable. Parameters:   dtd - data type descriptor isSigned public static boolean isSigned(DataTypeDescriptor dtd)(Code) Is the data type signed. Parameters:   dtd - data type descriptor Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)