org.boon.criteria

Class Selector

java.lang.Object

org.boon.criteria.Selector

Direct Known Subclasses:

DoubleCollector, FloatCollector, IntCollector, ProjectedSelector

public abstract class Selector
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected String	alias
protected String	name
protected boolean	path

Constructor Summary

Constructors

Constructor and Description
Selector() Default constructor.
Selector(String nameOrPath)
Selector(String nameOrPath, String alias)

Method Summary

Methods

Modifier and Type	Method and Description
static void	collectFrom(List<Selector> selectors, Collection<?> results) Performs collections from the results.
static void	collectFrom(List<Selector> selectors, Collection<?> results, Map<String,FieldAccess> fields) Performs collections from the results.
String	getAlias()
String	getName()
protected Object	getPropertyValue(Object item, Map<String,FieldAccess> fields)
protected void	getPropertyValueAndPutIntoRow(Map<String,Object> row, Object item, Map<String,FieldAccess> fields)
abstract void	handleComplete(List<Map<String,Object>> rows)
abstract void	handleRow(int index, Map<String,Object> row, Object item, Map<String,FieldAccess> fields)
abstract void	handleStart(Collection<?> results)
static Selector	rowId() Just grabs the index of the result set.
static Selector	select(String... ppath) Deprecated.
static Selector	select(String propName) Allows you to select a property or property path.
static Selector	selectAs(String propName, String alias) Selects but allows having a different alias for the output.
static Selector	selectAs(String propName, String alias, Function transform) Selects but allows having a different alias for the output.
static Selector	selectAsTemplate(String alias, String template, Template transform) Selects but allows having a different alias for the output
static <ITEM> List<Map<String,Object>>	selectFrom(List<Selector> selectors, Collection<ITEM> results) Performs the actual selection from the results.
static <ITEM> List<Map<String,Object>>	selectFrom(List<Selector> selectors, Collection<ITEM> results, Map<String,FieldAccess> fields) Performs the actual selection from the results.
static Selector	selectPropPath(String... ppath) Deprecated.
static List<Selector>	selects(Selector... selects) Create a list of selectors.
static Selector	toStr()
static Selector	toStr(String... ppath) Deprecated.
static Selector	toStr(String name)

Methods inherited from class java.lang.Object

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

Field Detail

name

protected String name

alias

protected String alias

path

protected final boolean path

Constructor Detail

Selector

public Selector()

Default constructor.

Selector

public Selector(String nameOrPath,
        String alias)

Parameters:

nameOrPath - name of property path

alias - alias of property path

Selector

public Selector(String nameOrPath)

Parameters:

nameOrPath - name of property path

Method Detail

collectFrom

public static void collectFrom(List<Selector> selectors,
               Collection<?> results)

Performs collections from the results.

Parameters:

selectors - list of selectors

results - results we are selecting from

collectFrom

public static void collectFrom(List<Selector> selectors,
               Collection<?> results,
               Map<String,FieldAccess> fields)

Performs collections from the results.

Parameters:

selectors - list of selectors

results - results we are selecting from

fields - fields

selectFrom

public static <ITEM> List<Map<String,Object>> selectFrom(List<Selector> selectors,
                                         Collection<ITEM> results)

Performs the actual selection from the results.

Type Parameters:

ITEM - List of items

Parameters:

selectors - list of selectors

results - results we are selecting from

Returns:

map of selected items per row

selectFrom

public static <ITEM> List<Map<String,Object>> selectFrom(List<Selector> selectors,
                                         Collection<ITEM> results,
                                         Map<String,FieldAccess> fields)

Performs the actual selection from the results.

Type Parameters:

ITEM - List of items

Parameters:

selectors - list of selectors

results - results we are selecting from

fields - fields

Returns:

map of selected items per row

selects

public static List<Selector> selects(Selector... selects)

Create a list of selectors.

Parameters:

selects - array of selectors

Returns:

getName

public String getName()

getPropertyValueAndPutIntoRow

protected void getPropertyValueAndPutIntoRow(Map<String,Object> row,
                                 Object item,
                                 Map<String,FieldAccess> fields)

getPropertyValue

protected Object getPropertyValue(Object item,
                      Map<String,FieldAccess> fields)

select

public static Selector select(String propName)

Allows you to select a property or property path.

Parameters:

propName - name of property or property path

Returns:

returns a Selector

selectAs

public static Selector selectAs(String propName,
                String alias)

Selects but allows having a different alias for the output.

Parameters:

propName - name of property or property path to select

alias - name that the value will be selected as.

Returns:

selector

selectAs

public static Selector selectAs(String propName,
                String alias,
                Function transform)

Selects but allows having a different alias for the output.

Parameters:

propName - name of property or property path to select

alias - name that the value will be selected as.

transform - Function that allows you to convert from an object into another object

Returns:

selector

selectAsTemplate

public static Selector selectAsTemplate(String alias,
                        String template,
                        Template transform)

Selects but allows having a different alias for the output. \ * @param alias name that the value will be selected as.

Parameters:

transform - Function that allows you to convert from an object into another object

Returns:

selector

toStr

public static Selector toStr(String name)

toStr

public static Selector toStr()

select

@Deprecated
public static Selector select(String... ppath)

Deprecated.

toStr

@Deprecated
public static Selector toStr(String... ppath)

Deprecated.

selectPropPath

@Deprecated
public static Selector selectPropPath(String... ppath)

Deprecated.

rowId

public static Selector rowId()

Just grabs the index of the result set.

Returns:

handleRow

public abstract void handleRow(int index,
             Map<String,Object> row,
             Object item,
             Map<String,FieldAccess> fields)

handleStart

public abstract void handleStart(Collection<?> results)

handleComplete

public abstract void handleComplete(List<Map<String,Object>> rows)

getAlias

public String getAlias()