com.whitestein.lsps.vaadin.ui.components.table.dataset

Class LspsDatabaseAccess

java.lang.Object

com.whitestein.lsps.vaadin.ui.components.table.dataset.LspsDatabaseAccess

public class LspsDatabaseAccess
extends Object

Provides access to shared record instances.

Author:

mvy

Field Summary

Fields

Modifier and Type	Field and Description
protected ExecutionContext	executionContext
protected ModelProviderClientService	modelProviderService
protected SharedRecordTypeFactory	recordFactory
protected com.whitestein.lsps.model.sharedrecord.SharedRecordType	srt type converted to the shared record type.
RecordType	type The type of the record to retrieve.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LspsDatabaseAccess(RecordType type, ExecutionContext executionContext, ModelProviderClientService modelProviderService, SharedRecordTypeFactory recordFactory)

Method Summary

Modifier and Type	Method and Description
protected List<com.whitestein.lsps.model.sharedrecord.QueryOrderingItem>	computeOrderings(SortSpec sort)
protected Expression	computeWhereExpression(com.google.common.collect.ImmutableSet<Filter> filters)
int	count(com.google.common.collect.ImmutableSet<Filter> filters)
static LspsDatabaseAccess	forQuery(Variant.ClosureVariant queryClosure, ExecutionContext executionContext, ModelProviderClientService modelProviderService, SharedRecordTypeFactory recordFactory) Provides shared record instances returned by a query function called by given closure.
static LspsDatabaseAccess	forType(RecordType type, ExecutionContext executionContext, ModelProviderClientService modelProviderService, SharedRecordTypeFactory recordFactory) Provides shared record instances of given type.
protected String	getIteratorExpression(Filter.ValueProvider<?> valueProvider) Returns an expression in the form of "i.field1.field2..." for given value provider.
protected String	getIteratorExpression(ISort sort) Returns an expression in the form of "i.field1.field2..." for given value provider.
ListHolder	list(com.google.common.collect.ImmutableSet<Filter> filters, SortSpec sort, int startIndex, int count)

Methods inherited from class java.lang.Object

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

Field Detail

type

public final RecordType type

The type of the record to retrieve. Not null.

srt

protected final com.whitestein.lsps.model.sharedrecord.SharedRecordType srt

type converted to the shared record type.

executionContext

protected final ExecutionContext executionContext

modelProviderService

protected final ModelProviderClientService modelProviderService

recordFactory

protected final SharedRecordTypeFactory recordFactory

Constructor Detail

LspsDatabaseAccess

protected LspsDatabaseAccess(RecordType type,
                             ExecutionContext executionContext,
                             ModelProviderClientService modelProviderService,
                             SharedRecordTypeFactory recordFactory)

Method Detail

forType

public static LspsDatabaseAccess forType(RecordType type,
                                         ExecutionContext executionContext,
                                         ModelProviderClientService modelProviderService,
                                         SharedRecordTypeFactory recordFactory)

Provides shared record instances of given type.

Parameters:

type - the shared record type, not null.

executionContext - not null

modelProviderService - not null

recordFactory - not null

Returns:

not null

forQuery

public static LspsDatabaseAccess forQuery(Variant.ClosureVariant queryClosure,
                                          ExecutionContext executionContext,
                                          ModelProviderClientService modelProviderService,
                                          SharedRecordTypeFactory recordFactory)

Provides shared record instances returned by a query function called by given closure.

Parameters:

queryClosure - the closure, not null. The closure must be parameterless and must call a query function: { -> [[..;]..;]query(["param1", "param2"]); }

executionContext - not null

modelProviderService - not null

recordFactory - not null

Returns:

not null

getIteratorExpression

protected String getIteratorExpression(Filter.ValueProvider<?> valueProvider)

Returns an expression in the form of "i.field1.field2..." for given value provider.

Parameters:

valueProvider - the value provider, not null.

Returns:

the expression or null if the value provider couldn't be converted to a path.

getIteratorExpression

protected String getIteratorExpression(ISort sort)

Returns an expression in the form of "i.field1.field2..." for given value provider.

Parameters:

sort - the sort, not null.

Returns:

the expression or null if the sort couldn't be converted to a path.

computeWhereExpression

protected final Expression computeWhereExpression(com.google.common.collect.ImmutableSet<Filter> filters)
                                           throws ValidationException

Throws:

ValidationException

computeOrderings

protected final List<com.whitestein.lsps.model.sharedrecord.QueryOrderingItem> computeOrderings(SortSpec sort)

list

public ListHolder list(com.google.common.collect.ImmutableSet<Filter> filters,
                       SortSpec sort,
                       int startIndex,
                       int count)

count

public int count(com.google.common.collect.ImmutableSet<Filter> filters)