com.datastax.oss.driver.api.querybuilder.delete.DeleteSelection Maven / Gradle / Ivy
/*
* Copyright DataStax, Inc.
*
* 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
*
* http://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 com.datastax.oss.driver.api.querybuilder.delete;
import com.datastax.oss.driver.api.core.CqlIdentifier;
import com.datastax.oss.driver.api.querybuilder.BindMarker;
import com.datastax.oss.driver.api.querybuilder.QueryBuilder;
import com.datastax.oss.driver.api.querybuilder.relation.OngoingWhereClause;
import com.datastax.oss.driver.api.querybuilder.select.Selector;
import com.datastax.oss.driver.api.querybuilder.term.Term;
import edu.umd.cs.findbugs.annotations.NonNull;
import edu.umd.cs.findbugs.annotations.Nullable;
import java.util.Arrays;
/**
* An in-progress DELETE statement: it targets a table and optionally a list of columns to delete;
* it needs at least one WHERE relation to become buildable.
*/
public interface DeleteSelection extends OngoingWhereClause {
/**
* Adds a selector.
*
* To create the argument, use one of the factory methods in {@link Selector}, for example
* {@link Selector#column(CqlIdentifier) column}. This type also provides shortcuts to create and
* add the selector in one call, for example {@link #column(CqlIdentifier)} for {@code
* selector(column(...))}.
*
*
Note that the only valid arguments for DELETE are a column, a field in a UDT column (nested
* UDTs are not supported), and an element in a collection column (nested collections are not
* supported).
*
*
If you add multiple selectors as once, consider {@link #selectors(Iterable)} as a more
* efficient alternative.
*/
@NonNull
DeleteSelection selector(@NonNull Selector selector);
/**
* Adds multiple selectors at once.
*
*
This is slightly more efficient than adding the selectors one by one (since the underlying
* implementation of this object is immutable).
*
*
To create the arguments, use one of the factory methods in {@link Selector}, for example
* {@link Selector#column(CqlIdentifier) column}.
*
*
Note that the only valid arguments for DELETE are a column, a field in a UDT column (nested
* UDTs are not supported), and an element in a collection column (nested collections are not
* supported).
*
* @see #selector(Selector)
*/
@NonNull
DeleteSelection selectors(@NonNull Iterable additionalSelectors);
/** Var-arg equivalent of {@link #selectors(Iterable)}. */
@NonNull
default DeleteSelection selectors(@NonNull Selector... additionalSelectors) {
return selectors(Arrays.asList(additionalSelectors));
}
/**
* Deletes a particular column by its CQL identifier.
*
* This is a shortcut for {@link #selector(Selector) selector(Selector.column(columnId))}.
*
* @see Selector#column(CqlIdentifier)
*/
@NonNull
default DeleteSelection column(@NonNull CqlIdentifier columnId) {
return selector(Selector.column(columnId));
}
/** Shortcut for {@link #column(CqlIdentifier) column(CqlIdentifier.fromCql(columnName))} */
@NonNull
default DeleteSelection column(@NonNull String columnName) {
return column(CqlIdentifier.fromCql(columnName));
}
/**
* Deletes a field inside of a UDT column, as in {@code DELETE user.name}.
*
*
This is a shortcut for {@link #selector(Selector) selector(Selector.field(udtColumnId,
* fieldId))}.
*
* @see Selector#field(CqlIdentifier, CqlIdentifier)
*/
@NonNull
default DeleteSelection field(
@NonNull CqlIdentifier udtColumnId, @NonNull CqlIdentifier fieldId) {
return selector(Selector.field(udtColumnId, fieldId));
}
/**
* Shortcut for {@link #field(CqlIdentifier, CqlIdentifier)
* field(CqlIdentifier.fromCql(udtColumnName), CqlIdentifier.fromCql(fieldName))}.
*
* @see Selector#field(String, String)
*/
@NonNull
default DeleteSelection field(@NonNull String udtColumnName, @NonNull String fieldName) {
return field(CqlIdentifier.fromCql(udtColumnName), CqlIdentifier.fromCql(fieldName));
}
/**
* Deletes an element in a collection column, as in {@code DELETE m['key']}.
*
*
This is a shortcut for {@link #selector(Selector) selector(Selector.element(collectionId,
* index))}.
*
* @see Selector#element(CqlIdentifier, Term)
*/
@NonNull
default DeleteSelection element(@NonNull CqlIdentifier collectionId, @NonNull Term index) {
return selector(Selector.element(collectionId, index));
}
/**
* Shortcut for {@link #element(CqlIdentifier, Term)
* element(CqlIdentifier.fromCql(collectionName), index)}.
*
* @see Selector#element(String, Term)
*/
@NonNull
default DeleteSelection element(@NonNull String collectionName, @NonNull Term index) {
return element(CqlIdentifier.fromCql(collectionName), index);
}
/**
* Specifies an element to delete as a raw CQL snippet.
*
*
This is a shortcut for {@link #selector(Selector) selector(QueryBuilder.raw(raw))}.
*
*
The contents will be appended to the query as-is, without any syntax checking or escaping.
* This method should be used with caution, as it's possible to generate invalid CQL that will
* fail at execution time; on the other hand, it can be used as a workaround to handle new CQL
* features that are not yet covered by the query builder.
*
* @see QueryBuilder#raw(String)
*/
@NonNull
default DeleteSelection raw(@NonNull String raw) {
return selector(QueryBuilder.raw(raw));
}
/**
* Adds a USING TIMESTAMP clause to this statement with a literal value.
*
*
If this method or {@link #usingTimestamp(BindMarker)} is called multiple times, the last
* value is used.
*/
@NonNull
DeleteSelection usingTimestamp(long timestamp);
/**
* Adds a USING TIMESTAMP clause to this statement with a bind marker.
*
*
If this method or {@link #usingTimestamp(long)} is called multiple times, the last value is
* used. Passing {@code null} to this method removes any previous timestamp.
*/
@NonNull
DeleteSelection usingTimestamp(@Nullable BindMarker bindMarker);
}