Java Property类代码示例

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
static Stream<DbEntity> getRelatedDbEntities(EntityResolver resolver, Class<?> entityType, Property<?> relationship) {
    ObjEntity entity = resolver.getObjEntity(entityType);

    if (entity == null) {
        throw new IllegalArgumentException("Not a Cayenne entity class: " + entityType.getName());
    }

    ObjRelationship objRelationship = entity.getRelationship(relationship.getName());

    if (objRelationship == null) {
        throw new IllegalArgumentException("No relationship '" + relationship.getName() + "' in entity " + entityType.getName());
    }

    List<DbRelationship> path = objRelationship.getDbRelationships();
    if (path.size() < 2) {
        return Stream.empty();
    }

    return path.subList(1, path.size()).stream().map(DbRelationship::getSourceEntity);
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
/**
 * Returns a Table related to a given entity via the specified relationship. Useful for navigation to join tables
 * that are not directly mapped to Java classes.
 *
 * @param entityType   a root entity used to resolve a join table.
 * @param relationship a Property indicating an ObjRelationship.
 * @param tableIndex   An index in a list of tables spanned by 'relationship'. Index of 0 corresponds to the target
 *                     DbEntity of the first object in a chain of DbRelationships for a given ObjRelationship.
 * @return a Table related to a given entity via the specified relationship.
 * @since 0.24
 */
public Table getRelatedTable(Class<?> entityType, Property<?> relationship, int tableIndex) {
    ObjEntity entity = resolver.getObjEntity(entityType);
    if (entity == null) {
        throw new IllegalArgumentException("Not a Cayenne entity class: " + entityType.getName());
    }

    ObjRelationship flattened = entity.getRelationship(relationship.getName());

    if (flattened == null) {
        throw new IllegalArgumentException("No relationship '" + relationship.getName() + "' in entity " + entityType.getName());
    }

    List<DbRelationship> path = flattened.getDbRelationships();

    if (path.size() < tableIndex + 1) {
        throw new IllegalArgumentException("Index " + tableIndex + " is out of bounds for relationship '" + relationship.getName());
    }

    return getTable(path.get(tableIndex).getTargetEntityName());
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
public MapperBuilder matchBy(Property<?>... paths) {

		if (paths == null) {
			throw new NullPointerException("Null 'paths'");
		}

		for (Property<?> p : paths) {
			this.paths.add(p.getName());
		}

		return this;
	}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
/**
 * @since 1.1
 */
@Override
public DefaultCreateOrUpdateBuilder<T> matchBy(Property<?>... matchAttributes) {
	this.mapper = null;
	this.mapperBuilder.matchBy(matchAttributes);
	return this;
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
@Test
public void testMatchBy_Additivity() {
	Map<String, Mapper> mappers = builder.matchBy(Property.create("a", Object.class), Property.create("b", Object.class))
			.matchBy("c").createPathMappers();
	assertEquals(3, mappers.size());
	assertTrue(mappers.containsKey("db:a"));
	assertTrue(mappers.containsKey("db:b"));
	assertTrue(mappers.containsKey("db:c"));
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
/**
 * @param attributesOrRelationships an array of properties to exclude.
 * @return a new instance of Constraints.
 */
public ConstraintsBuilder<T> excludeProperties(Property<?>... attributesOrRelationships) {

    String[] names = new String[attributesOrRelationships.length];
    for (int i = 0; i < attributesOrRelationships.length; i++) {
        names[i] = attributesOrRelationships[i].getName();
    }

    return excludeProperties(names);
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
public CayenneTestDataManagerBuilder relatedTables(Class<?> entityType, Property<?> relationship) {
    CayenneModelUtils.getRelatedDbEntities(resolver, entityType, relationship).forEach(dbEntities::add);
    return this;
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
@Override
public DefaultDeleteBuilder<T> matchBy(Property<?>... matchAttributes) {
	this.mapper = null;
	this.mapperBuilder.matchBy(matchAttributes);
	return this;
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
@Test
public void testCreateMapper_ByPropreties_Single() {
	Mapper mapper = builder.matchBy(Property.create("a", Object.class)).createMapper();
	assertNotNull(mapper);
	assertTrue(mapper instanceof PathMapper);
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
@Test
public void testCreateMapper_ByPropreties_Multi() {
	Mapper mapper = builder.matchBy(Property.create("a", Object.class), Property.create("b", Object.class)).createMapper();
	assertNotNull(mapper);
	assertTrue(mapper instanceof MultiPathMapper);
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
/**
 * @since 1.2
 */
@Override
public SimpleResponse unrelate(Class<?> type, Object sourceId, Property<?> relationship) {
    return unrelate(type, sourceId, relationship.getName());
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
public static ByKeyObjectMapperFactory byKey(Property<?> key) {
	return new ByKeyObjectMapperFactory(key.getName());
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
@Override
public SelectBuilder<T> parent(Class<?> parentType, Object parentId, Property<T> relationshipFromParent) {
    context.setParent(new EntityParent<>(parentType, parentId, relationshipFromParent.getName()));
    return this;
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
@Override
public SelectBuilder<T> toManyParent(Class<?> parentType, Object parentId,
                                     Property<? extends Collection<T>> relationshipFromParent) {
    return parent(parentType, parentId, relationshipFromParent.getName());
}
 

import org.apache.cayenne.exp.Property; //导入依赖的package包/类
@Override
public SelectBuilder<T> autocompleteOn(Property<?> autocompleteProperty) {
    context.setAutocompleteProperty(autocompleteProperty != null ? autocompleteProperty.getName() : null);
    return this;
}