Package org.apache.empire.data.bean

Class BeanResult<T>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<E>

java.util.ArrayList<T>

org.apache.empire.data.bean.BeanResult<T>

All Implemented Interfaces:

Serializable, Cloneable, Iterable<T>, Collection<T>, List<T>, RandomAccess

public class BeanResult<T>
extends ArrayList<T>

BeanResult This is a simple helper class that performs reading a list of beans from a query Internally DBReader.getBeanList() is used.

Author:

doebele

See Also:

• Serialized Form

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor	Description
BeanResult(Class<T> beanType, DBCommand cmd)	Create a bean result from a command object.
BeanResult(Class<T> beanType, DBRowSet rowset)	Creates a bean result for a Table, View or Query from the supplied columns.

Method Summary

Modifier and Type	Method	Description
protected void	autoSelectColumns(DBRowSet rowset)	Selects all columns for a given rowset
final int	fetch(DBContext context)	Executes the query and fetches the result
int	fetch(DBContext context, int maxItems)	Executes the query and fetches the result
DBCommand	getCommand()	Returns the current command Used to add constraints, order, grouping etc.
protected boolean	isPropertyAcessible(Method[] methods, String property, DataType dataType)	Checks if the property is accessible i.e. has a getter method on the beanType

Methods inherited from class java.util.ArrayList

add, add, addAll, addAll, clear, clone, contains, ensureCapacity, equals, forEach, get, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, removeIf, removeRange, replaceAll, retainAll, set, size, sort, spliterator, subList, toArray, toArray, trimToSize

Methods inherited from class java.util.AbstractCollection

containsAll, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, stream, toArray

Methods inherited from interface java.util.List

containsAll

Constructor Details

BeanResult

public BeanResult(Class<T> beanType,
 DBCommand cmd)

Create a bean result from a command object. No checks will be performed here whether the command is compatible with the supplied class.

Parameters:

beanType - the bean type

cmd - the command

BeanResult

public BeanResult(Class<T> beanType,
 DBRowSet rowset)

Creates a bean result for a Table, View or Query from the supplied columns. At least one column must match the given getters / setters on the supplied class otherwise an BeanIncompatibleException will be thrown.

Parameters:

beanType - the of T

rowset - the rowset

Method Details

getCommand

public DBCommand getCommand()

Returns the current command Used to add constraints, order, grouping etc.

Returns:

the command

fetch

public int fetch(DBContext context,
 int maxItems)

Executes the query and fetches the result

Parameters:

context - the database context

maxItems - the maximum number of items to query

Returns:

the number of items fetched by the query

fetch

public final int fetch(DBContext context)

Executes the query and fetches the result

Parameters:

context - the database context

Returns:

the number of items fetched by the query

autoSelectColumns

protected void autoSelectColumns(DBRowSet rowset)

Selects all columns for a given rowset

Parameters:

rowset - the rowset for which to select all columns

isPropertyAcessible

protected boolean isPropertyAcessible(Method[] methods,
 String property,
 DataType dataType)

Checks if the property is accessible i.e. has a getter method on the beanType

Parameters:

methods - the beanType methods

property - the property to check

dataType - the dataType

Returns:

true if the property is accessible or false otherwise