本文整理了Java中com.holonplatform.core.query.Query.target
方法的一些代码示例,展示了Query.target
的具体用法。这些代码示例主要来源于Github
/Stackoverflow
/Maven
等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。Query.target
方法的具体详情如下:
包路径:com.holonplatform.core.query.Query
类名称:Query
方法名:target
暂无
代码示例来源:origin: com.holon-platform.core/holon-core
public DefaultBeanQuery(Class<T> beanClass, Query executor) {
super(executor);
this.beanClass = beanClass;
executor.target(getDataTarget(beanClass));
}
代码示例来源:origin: com.holon-platform.core/holon-core
/**
* Create a {@link Query} commodity, setting given <code>target</code> as query data target.
* @param target Query data target (not null)
* @return A new {@link Query} instance, which can be used to configure and execute a query
*/
default Query query(DataTarget<?> target) {
ObjectUtils.argumentNotNull(target, "Query target must be not null");
return query().target(target);
}
代码示例来源:origin: com.holon-platform.vaadin/holon-vaadin
@SuppressWarnings({ "rawtypes", "unchecked" })
protected <P extends Property<?>> void setupItemConverter(Datastore datastore, DataTarget<?> dataTarget,
Iterable<P> properties) {
if (selectProperty != null && PathProperty.class.isAssignableFrom(selectProperty.getClass())
&& !getInstance().getItemConverter().isPresent()) {
itemConverter(value -> {
if (value != null) {
return datastore.query().target(dataTarget).filter(((PathProperty) selectProperty).eq(value))
.findOne(properties).orElse(null);
}
return null;
});
}
}
代码示例来源:origin: com.holon-platform.vaadin/holon-vaadin
@SuppressWarnings({ "rawtypes", "unchecked" })
protected <P extends Property<?>> void setupItemConverter(Datastore datastore, DataTarget<?> dataTarget,
Iterable<P> properties) {
if (selectProperty != null && PathProperty.class.isAssignableFrom(selectProperty.getClass())
&& !getInstance().getItemConverter().isPresent()) {
itemConverter(value -> {
if (value != null) {
return datastore.query().target(dataTarget).filter(((PathProperty) selectProperty).eq(value))
.findOne(properties).orElse(null);
}
return null;
});
}
}
代码示例来源:origin: com.holon-platform.jdbc/documentation-datastore-jdbc
public void orderby() {
// tag::orderby[]
QuerySort orderBySort = OrderBySort.create("id asc, name desc"); // <1>
Stream<Long> results = getDatastore().query().target(TARGET).sort(orderBySort).stream(ID); // <2>
// end::orderby[]
}
代码示例来源:origin: com.holon-platform.jdbc/documentation-datastore-jdbc
public void where1() {
// tag::where1[]
QueryFilter whereFilter = WhereFilter.create("name='John'"); // <1>
Stream<Long> results = getDatastore().query().target(TARGET).filter(whereFilter).stream(ID); // <2>
// end::where1[]
}
代码示例来源:origin: com.holon-platform.core/documentation-core
public void resolver() {
ExpressionResolver<MyExpression, QuerySort> resolver = ExpressionResolver.create(MyExpression.class, // <2>
QuerySort.class, (expression, context) -> {
return Optional.of(QuerySort.asc(SOME_PROPERTY));
});
Datastore datastore = getDatastore(); // build or obtain a concrete Datastore implementation
datastore.addExpressionResolver(resolver); // <3>
datastore.query().target(DataTarget.named("test")).sort(new MyExpression()).stream(SOME_PROPERTY); // <4>
}
// end::resolver[]
代码示例来源:origin: com.holon-platform.core/documentation-core
public void customSort() {
Datastore datastore = getDatastore(); // build or obtain a concrete Datastore implementation
datastore.addExpressionResolver(new MySortResolver()); // <4>
Stream<String> results = datastore.query().target(DataTarget.named("test")).sort(new MySort()).stream(PROPERTY); // <5>
}
// end::customsort[]
代码示例来源:origin: com.holon-platform.jpa/documentation-datastore-jpa
void operations() {
// tag::model3[]
Datastore datastore = getJpaDatastore();
Stream<Long> ids = datastore.query().target(TARGET).filter(ID.gt(0L)).sort(VALUE.asc()).stream(ID); // <1>
Stream<PropertyBox> results = datastore.query().target(TARGET).filter(ID.gt(0L)).sort(VALUE.asc()).stream(TEST); // <2>
PropertyBox valueToSave = PropertyBox.builder(TEST).set(ID, 1L).set(VALUE, "test").build();
datastore.save(TARGET, valueToSave); // <3>
// end::model3[]
}
代码示例来源:origin: com.holon-platform.jdbc/documentation-datastore-jdbc
public void naming2() {
// tag::naming2[]
Datastore datastore = JdbcDatastore.builder().dataSource(createOrObtainDatasource()).build(); // <1>
PropertyBox value = PropertyBox.builder(TEST).set(ID, 1L).set(VALUE, "One").build();
datastore.save(TARGET, value); // <2>
Stream<PropertyBox> results = datastore.query().target(TARGET).filter(ID.goe(1L)).stream(TEST); // <3>
List<String> values = datastore.query().target(TARGET).sort(ID.asc()).list(VALUE); // <4>
datastore.bulkDelete(TARGET).filter(ID.gt(0L)).execute(); // <5>
// end::naming2[]
}
代码示例来源:origin: com.holon-platform.core/documentation-core
public void customFilter() {
Datastore datastore = getDatastore(); // build or obtain a concrete Datastore implementation
datastore.addExpressionResolver(new MyFilterResolver()); // <4>
Stream<String> results = datastore.query().target(DataTarget.named("test"))
.filter(PROPERTY.isNotNull().and(new MyFilter(PROPERTY, "testValue"))).stream(PROPERTY); // <5>
}
// end::customfilter[]
代码示例来源:origin: com.holon-platform.vaadin/documentation-vaadin
public void selectable11() {
// tag::selectable11[]
Datastore datastore = obtainDatastore();
final PathProperty<Long> ID = PathProperty.create("id", Long.class);
final PathProperty<String> DESCRIPTION = PathProperty.create("description", String.class);
final DataTarget<?> TARGET = DataTarget.named("testData");
final PropertySet<?> PROPERTIES = PropertySet.of(ID, DESCRIPTION);
SingleSelect<Long> singleSelect = Components.input.singleSelect(ID)
.dataSource(datastore, DataTarget.named("testData"), PROPERTIES)
.itemConverter(
value -> datastore.query().target(TARGET).filter(ID.eq(value)).findOne(PROPERTIES).orElse(null)) // <1>
.build();
// end::selectable11[]
}
代码示例来源:origin: com.holon-platform.jpa/documentation-datastore-jpa
public void expressionResolverRegistration() {
// tag::expreg1[]
Datastore datastore = JpaDatastore.builder() //
.withExpressionResolver(new MyExpressionResolver()) // <1>
.build();
// end::expreg1[]
// tag::expreg2[]
datastore.addExpressionResolver(new MyExpressionResolver()); // <1>
// end::expreg2[]
// tag::expreg3[]
long result = datastore.query().target(DataTarget.named("Test")) //
.withExpressionResolver(new MyExpressionResolver()) // <1>
.count();
// end::expreg3[]
}
代码示例来源:origin: com.holon-platform.core/documentation-core
@SuppressWarnings({ "rawtypes", "unchecked" })
public void subquery2() {
// tag::subquery2[]
Datastore datastore = getDatastore(); // this is supposed to be a relational Datastore implementation
final DataTarget TARGET1 = DataTarget.named("testTarget1");
final PathProperty<Integer> PROPERTY1 = TARGET1.property("test", Integer.class);
final DataTarget TARGET2 = DataTarget.named("testTarget2");
final PathProperty<Integer> PROPERTY2 = TARGET2.property("test", Integer.class);
Stream<Integer> results = datastore.query().target(TARGET1)
.filter(SubQuery.create().target(TARGET2).filter(PROPERTY2.eq(PROPERTY1)).exists()).stream(PROPERTY2); // <1>
results = datastore.query().target(TARGET1)
.filter(SubQuery.create().target(TARGET2).filter(PROPERTY2.eq(PROPERTY1)).notExists())
.stream(PROPERTY2); // <2>
// end::subquery2[]
}
代码示例来源:origin: com.holon-platform.jdbc/documentation-datastore-jdbc
public void expressionResolverRegistration() {
// tag::expreg1[]
Datastore datastore = JdbcDatastore.builder() //
.withExpressionResolver(new MyExpressionResolver()) // <1>
.build();
// end::expreg1[]
// tag::expreg2[]
datastore.addExpressionResolver(new MyExpressionResolver()); // <1>
// end::expreg2[]
// tag::expreg3[]
long result = datastore.query().target(DataTarget.named("test")) //
.withExpressionResolver(new MyExpressionResolver()) // <1>
.count();
// end::expreg3[]
}
代码示例来源:origin: com.holon-platform.core/documentation-core
@SuppressWarnings({ "rawtypes", "unchecked" })
public void subquery1() {
// tag::subquery1[]
Datastore datastore = getDatastore(); // this is supposed to be a relational Datastore implementation
final DataTarget TARGET1 = DataTarget.named("testTarget1");
final PathProperty<Integer> PROPERTY1 = TARGET1.property("test", Integer.class);
final DataTarget TARGET2 = DataTarget.named("testTarget2");
final PathProperty<Integer> PROPERTY2 = TARGET2.property("test", Integer.class);
SubQuery<Integer> subQuery = SubQuery.create().target(TARGET2).filter(PROPERTY1.goe(1)).select(PROPERTY1); // <1>
Stream<Integer> results = datastore.query().target(TARGET1).filter(PROPERTY2.in(subQuery)).stream(PROPERTY2); // <2>
// end::subquery1[]
}
代码示例来源:origin: com.holon-platform.jdbc/documentation-datastore-jdbc
public void mapping3() {
// tag::mapping3[]
Datastore datastore = JdbcDatastore.builder().dataSource(createOrObtainDatasource()).build(); // <1>
PropertyBox value = PropertyBox.builder(MyEntity.PROPERTIES) //
.set(MyEntity.PROPERTIES.property("id"), 1L) //
.set(MyEntity.PROPERTIES.property("value"), "One").build();
datastore.save(MyEntity.TARGET, value); // <2>
Stream<PropertyBox> results = datastore.query().target(MyEntity.TARGET)
.filter(MyEntity.PROPERTIES.property("id").goe(1L)).stream(MyEntity.PROPERTIES); // <3>
// end::mapping3[]
}
代码示例来源:origin: com.holon-platform.core/documentation-core
public void queryResults() {
// tag::queryresults[]
final NumericProperty<Integer> PROPERTY1 = NumericProperty.integerType("test1");
final StringProperty PROPERTY2 = StringProperty.create("test2");
final PropertySet<?> PROPERTIES = PropertySet.of(PROPERTY1, PROPERTY2);
final DataTarget<?> TARGET = DataTarget.named("testTarget");
Datastore datastore = getDatastore(); // build or obtain a concrete Datastore implementation
long count = datastore.query().target(TARGET).count(); // <1>
Stream<Integer> values = datastore.query(TARGET).stream(PROPERTY1); // <2>
Optional<Integer> value = datastore.query(TARGET).findOne(PROPERTY1); // <3>
Stream<PropertyBox> results = datastore.query(TARGET).stream(PROPERTY1, PROPERTY2); // <4>
results = datastore.query(TARGET).stream(PROPERTIES); // <5>
List<PropertyBox> list = datastore.query(TARGET).list(PROPERTY1, PROPERTY2); // <6>
Optional<PropertyBox> result = datastore.query(TARGET).findOne(PROPERTY1, PROPERTY2); // <7>
// end::queryresults[]
}
代码示例来源:origin: com.holon-platform.core/documentation-core
public void queryDefinition() {
// tag::querydefinition[]
final PathProperty<Integer> PROPERTY = PathProperty.create("test", Integer.class);
Datastore datastore = getDatastore(); // build or obtain a Datastore
Query query = datastore.query() // <1>
.target(DataTarget.named("testTarget")) // <2>
.filter(PROPERTY.gt(10)) // <3>
.sort(PROPERTY.asc()) // <4>
.aggregate(PROPERTY) // <5>
.limit(100) // <6>
.offset(200); // <7>
query = datastore.query(DataTarget.named("testTarget")) // <8>
.aggregate(QueryAggregation.builder().path(PROPERTY).filter(PROPERTY.gt(10)).build()) // <9>
.restrict(100, 200); // <10>
// end::querydefinition[]
}
代码示例来源:origin: com.holon-platform.core/documentation-core
@SuppressWarnings({ "rawtypes", "unchecked" })
public void joins() {
// tag::joins[]
final DataTarget TARGET1 = DataTarget.named("testTarget1");
final PathProperty<Integer> PROPERTY1 = TARGET1.property("test", Integer.class);
final DataTarget TARGET2 = DataTarget.named("testTarget2");
final PathProperty<Integer> PROPERTY2 = TARGET2.property("test", Integer.class);
RelationalTarget<String> RT = RelationalTarget.of(TARGET1) // <1>
.join(TARGET2, JoinType.INNER).on(PROPERTY2.eq(PROPERTY1)).add(); // <2>
RT = RelationalTarget.of(TARGET1).innerJoin(TARGET2).on(PROPERTY2.eq(PROPERTY1)).add(); // <3>
RT = RelationalTarget.of(TARGET1).leftJoin(TARGET2).on(PROPERTY2.eq(PROPERTY1)).add(); // <4>
RT = RelationalTarget.of(TARGET1).rightJoin(TARGET2).on(PROPERTY2.eq(PROPERTY1)).add(); // <5>
Stream<Integer> results = getDatastore().query().target(RT).stream(PROPERTY1); // <6>
// end::joins[]
}
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