org.omus.data
Class TableDefinition

java.lang.Object
  |
  +--org.omus.data.TableDefinition

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable

public final class TableDefinition

extends java.lang.Object

implements java.io.Serializable, java.lang.Cloneable

TableDefinition objects are used to define the names and datatypes of the columns of a DataTable object.

See Also:

Serialized Form

Constructor Summary

TableDefinition()

Method Summary

void	addColumn(java.lang.String name, java.lang.Class type) Adds a new column to this table definition.
java.lang.Object	clone() Returns a clone of this table definition.
boolean	equals(java.lang.Object o) Returns true if the specified object is a table definition with the same sequence of columns.
int	getColumnCount() Returns the number of columns in this table definition.
java.lang.String	getColumnName(int idx) Returns the name of the column at the specified index position.
java.lang.String[]	getColumnNames() Returns an array of all column names in the order they were added to this TableDefinition.
java.lang.Class	getColumnType(int idx) Returns the type of the column at the specified index position.
boolean	matches(DataRow dr) Returns true if the specified DataRow matches this table definition.
java.lang.String	toString()

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

TableDefinition

public TableDefinition()

Method Detail

addColumn

public void addColumn(java.lang.String name,
                      java.lang.Class type)

Adds a new column to this table definition. This method will fail if this TableDefinition object was already used to construct a new DataTable object, since it is unmodifiable after that. The second argument must be one of the 10 subclasses of DataField.

getColumnCount

public int getColumnCount()

Returns the number of columns in this table definition.

getColumnName

public java.lang.String getColumnName(int idx)

Returns the name of the column at the specified index position.

getColumnType

public java.lang.Class getColumnType(int idx)

Returns the type of the column at the specified index position.

getColumnNames

public java.lang.String[] getColumnNames()

Returns an array of all column names in the order they were added to this TableDefinition.

matches

public boolean matches(DataRow dr)

Returns true if the specified DataRow matches this table definition. The number of DataFields contained in the specified DataRow must match the number of columns in this definition object and each DataField of the specified DataRow must have a matching name and datatype in this definition object.

equals

public boolean equals(java.lang.Object o)

Returns true if the specified object is a table definition with the same sequence of columns.

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

clone

public java.lang.Object clone()

Returns a clone of this table definition.