org.expasy.jpl.commons.base.record
Class DataTable

java.lang.Object
  org.expasy.jpl.commons.base.record.DataTable

All Implemented Interfaces:

Serializable, Iterable<DataTable.Record>

public final class DataTable
extends Object
implements Iterable<DataTable.Record>, Serializable

DataTable is a kind of naive relational database table. It handles Records (a set of data elements) satisfying a signature model (with typed fields).

Version:

1.0

Author:

nikitin

See Also:

DataTableFactory, Serialized Form

Nested Class Summary

class

DataTable.Record Data table record internal class (immutable).

Method Summary

DataTable.Record	addNewRecord(Properties fieldValues) Create and add a new instance of internal class Record with values.
Map<String,DataTableFactory.TypeManager.IType>	getFields() Get the field names of this table.
DataTableFactory.TypeManager.IType	getFieldType(String field) Get the field type of the given field of this table.
DataTable.Record	getRecord(int id) Get the record identified by the given id.
<T> org.apache.commons.collections15.Transformer<DataTable.Record,T>	getTypeAccessor(String fieldName) Access field String value from Record.
boolean	hasField(String name) Return true if this table has the given field.
Iterator<DataTable.Record>	iterator() Get an iterator over the records.
Set<DataTable.Record>	select(Condition<DataTable.Record> condition) Select every Records that satisfy the given condition.
int	size()
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

getTypeAccessor

public <T> org.apache.commons.collections15.Transformer<DataTable.Record,T> getTypeAccessor(String fieldName)

Access field String value from Record.

Type Parameters:

T - the field type.

Parameters:

fieldName - the field name.

Returns:

the accessor to T.

addNewRecord

public DataTable.Record addNewRecord(Properties fieldValues)

Create and add a new instance of internal class Record with values.

Parameters:

fieldValues - the field values of the brand new Record.

Returns:

a new record filled with given values.

getRecord

public DataTable.Record getRecord(int id)

Get the record identified by the given id.

Parameters:

id - the record unique identifier.

Returns:

an identified record.

hasField

public boolean hasField(String name)

Return true if this table has the given field.

Parameters:

name - the name of the queried field.

Returns:

true if this table has the field.

getFields

public final Map<String,DataTableFactory.TypeManager.IType> getFields()

Get the field names of this table.

Returns:

field names.

getFieldType

public DataTableFactory.TypeManager.IType getFieldType(String field)

Get the field type of the given field of this table.

Parameters:

field - the field name to get the type from.

Returns:

the field type.

iterator

public Iterator<DataTable.Record> iterator()

Get an iterator over the records.

Specified by:

iterator in interface Iterable<DataTable.Record>

Returns:

the records.

select

public Set<DataTable.Record> select(Condition<DataTable.Record> condition)

Select every Records that satisfy the given condition.

Parameters:

condition - the condition to test records.

Returns:

the selected records.

size

public int size()

toString

public String toString()

Overrides:

toString in class Object