org.ballerinalang.model.values

Class BTable

java.lang.Object

org.ballerinalang.model.values.BTable

All Implemented Interfaces:

BCollection, BRefType<Object>, BValue

public class BTable
extends Object
implements BRefType<Object>, BCollection

The BTable represents a data set in Ballerina.

Since:

0.8.0

Field Summary

Fields

Modifier and Type	Field and Description
protected BStructType	constraintType
protected DataIterator	iterator

Constructor Summary

Constructors

Constructor and Description
BTable()
BTable(BType type, BStruct configStruct)
BTable(DataIterator dataIterator, boolean loadSQLTableToMemory)
BTable(String tableName, BStructType constraintType)
BTable(String query, BTable fromTable, BTable joinTable, BStructType constraintType, BRefValueArray params)

Method Summary

Modifier and Type	Method and Description
void	addData(BStruct data)
void	addData(BStruct data, Context context)
void	close(boolean isInTransaction)
BValue	copy() Deep copy BValue.
protected void	finalize()
protected void	generateIterator()
Object[]	getArray(int columnIndex)
String	getBlob(int columnIndex)
boolean	getBoolean(int columnIndex)
List<ColumnDefinition>	getColumnDefs()
double	getFloat(int columnIndex)
long	getInt(int columnIndex)
BStruct	getNext()
String	getString(int columnIndex)
Object[]	getStruct(int columnIndex)
BStructType	getStructType()
BType	getType()
boolean	hasNext(boolean isInTransaction)
protected boolean	isIteratorGenerationConditionMet()
protected boolean	iteratorResetRequired()
BIterator	newIterator() Create new Iterator for this collection.
void	next()
void	performAddOperation(BStruct data, Context context) Performs addition of a record to the database.
void	performRemoveOperation(Context context, BFunctionPointer lambdaFunction) Performs Removal of records matching the condition defined by the provided lambda function.
void	reset(boolean isInTransaction)
protected void	resetIterationHelperAttributes()
String	stringValue()
Object	value()

Methods inherited from class java.lang.Object

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

Field Detail

iterator

protected DataIterator iterator

constraintType

protected BStructType constraintType

Constructor Detail

BTable

public BTable()

BTable

public BTable(DataIterator dataIterator,
              boolean loadSQLTableToMemory)

BTable

public BTable(String tableName,
              BStructType constraintType)

BTable

public BTable(String query,
              BTable fromTable,
              BTable joinTable,
              BStructType constraintType,
              BRefValueArray params)

BTable

public BTable(BType type,
              BStruct configStruct)

Method Detail

value

public Object value()

Specified by:

value in interface BRefType<Object>

stringValue

public String stringValue()

Specified by:

stringValue in interface BValue

getType

public BType getType()

Specified by:

getType in interface BValue

hasNext

public boolean hasNext(boolean isInTransaction)

next

public void next()

close

public void close(boolean isInTransaction)

reset

public void reset(boolean isInTransaction)

getNext

public BStruct getNext()

performAddOperation

public void performAddOperation(BStruct data,
                                Context context)

Performs addition of a record to the database.

Parameters:

data - The record to be inserted

context - The context which represents the runtime state of the program that called "table.add"

addData

public void addData(BStruct data,
                    Context context)

addData

public void addData(BStruct data)

performRemoveOperation

public void performRemoveOperation(Context context,
                                   BFunctionPointer lambdaFunction)

Performs Removal of records matching the condition defined by the provided lambda function.

Parameters:

context - The context which represents the runtime state of the program that called "table.remove"

lambdaFunction - The function that decides the condition of data removal

getString

public String getString(int columnIndex)

getInt

public long getInt(int columnIndex)

getFloat

public double getFloat(int columnIndex)

getBoolean

public boolean getBoolean(int columnIndex)

getBlob

public String getBlob(int columnIndex)

getStruct

public Object[] getStruct(int columnIndex)

getArray

public Object[] getArray(int columnIndex)

getColumnDefs

public List<ColumnDefinition> getColumnDefs()

getStructType

public BStructType getStructType()

copy

public BValue copy()

Description copied from interface: BValue

Deep copy BValue.

Specified by:

copy in interface BValue

Returns:

A copy of this BValue

newIterator

public BIterator newIterator()

Description copied from interface: BCollection

Create new Iterator for this collection.

Specified by:

newIterator in interface BCollection

Returns:

iterator created.

generateIterator

protected void generateIterator()

isIteratorGenerationConditionMet

protected boolean isIteratorGenerationConditionMet()

resetIterationHelperAttributes

protected void resetIterationHelperAttributes()

finalize

protected void finalize()

Overrides:

finalize in class Object

iteratorResetRequired

protected boolean iteratorResetRequired()