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/*
* Copyright 2018-2020 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.data.cassandra.core;
import org.springframework.data.cassandra.core.query.Query;
import org.springframework.util.Assert;
import com.datastax.oss.driver.api.core.CqlIdentifier;
/**
* {@link ExecutableDeleteOperation} allows creation and execution of Cassandra {@code DELETE} operations in a fluent
* API style.
*
* The starting {@literal domainType} is used for mapping the {@link Query} provided via {@code matching} into the
* Cassandra specific representation. The table to operate on is by default derived from the initial
* {@literal domainType} and can be defined there via {@link org.springframework.data.cassandra.core.mapping.Table}.
* Using {@code inTable} allows to override the table name for the execution.
*
*
*
* delete(Jedi.class)
* .inTable("star_wars")
* .matching(query(where("firstname").is("luke")))
* .all();
*
*
*
* @author Mark Paluch
* @since 2.1
*/
public interface ExecutableDeleteOperation {
/**
* Begin creating a {@code DELETE} operation for the given {@link Class domainType}.
*
* @param domainType {@link Class type} of domain object to delete; must not be {@literal null}.
* @return new instance of {@link ExecutableDelete}.
* @throws IllegalArgumentException if {@link Class domainType} is {@literal null}.
* @see ExecutableDelete
*/
ExecutableDelete delete(Class domainType);
/**
* Table override (optional).
*/
interface DeleteWithTable {
/**
* Explicitly set the {@link String name} of the table on which to execute the delete.
*
* Skip this step to use the default table derived from the {@link Class domain type}.
*
* @param table {@link String name} of the table; must not be {@literal null} or empty.
* @return new instance of {@link DeleteWithQuery}.
* @throws IllegalArgumentException if {@link String table} is {@literal null} or empty.
* @see #inTable(CqlIdentifier)
* @see DeleteWithQuery
*/
default DeleteWithQuery inTable(String table) {
Assert.hasText(table, "Table name must not be null or empty");
return inTable(CqlIdentifier.fromCql(table));
}
/**
* Explicitly set the {@link CqlIdentifier name} of the table on which to execute the delete.
*
* Skip this step to use the default table derived from the {@link Class domain type}.
*
* @param table {@link CqlIdentifier name} of the table; must not be {@literal null}.
* @return new instance of {@link DeleteWithQuery}.
* @throws IllegalArgumentException if {@link CqlIdentifier table} is {@literal null}.
* @see com.datastax.oss.driver.api.core.CqlIdentifier
* @see DeleteWithQuery
*/
DeleteWithQuery inTable(CqlIdentifier table);
}
/**
* Filtering (optional).
*/
interface DeleteWithQuery {
/**
* Define the {@link Query} filtering elements to delete.
*
* @param query {@link Query} used to filter the elements to delete; must not be {@literal null}.
* @return new instance of {@link TerminatingDelete}.
* @throws IllegalArgumentException if {@link Query} is {@literal null}.
* @see TerminatingDelete
*/
TerminatingDelete matching(Query query);
}
/**
* Trigger {@code DELETE} execution by calling one of the terminating methods.
*/
interface TerminatingDelete {
/**
* Remove all matching rows.
*
* @return the {@link WriteResult}; never {@literal null}.
*/
WriteResult all();
}
/**
* the {@link ExecutableDelete} interface provides methods for constructing {@code DELETE} operations in a fluent way.
*/
interface ExecutableDelete extends DeleteWithTable, DeleteWithQuery {}
}