com.datastax.oss.driver.api.querybuilder.insert.OngoingValues 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.insert;
import com.datastax.oss.driver.api.core.CqlIdentifier;
import com.datastax.oss.driver.api.querybuilder.term.Term;
import com.datastax.oss.driver.internal.core.CqlIdentifiers;
import edu.umd.cs.findbugs.annotations.NonNull;
import java.util.Map;
public interface OngoingValues {
/**
* Sets a value for a column, as in {@code INSERT INTO ... (c) VALUES (?)}.
*
* If this is called twice for the same column, the previous entry is discarded and the new
* entry will be added at the end of the list.
*/
@NonNull
RegularInsert value(@NonNull CqlIdentifier columnId, @NonNull Term value);
/**
* Shortcut for {@link #value(CqlIdentifier, Term) value(CqlIdentifier.fromCql(columnName),
* value)}.
*/
@NonNull
default RegularInsert value(@NonNull String columnName, @NonNull Term value) {
return value(CqlIdentifier.fromCql(columnName), value);
}
/**
* Sets values for multiple columns in one call, as in {@code INSERT INTO ... (key1, key2) VALUES
* (value1, value2)}.
*
*
If the map contains columns that had already been added to this statement, the previous
* entries are discarded and the new entries will be added at the end of the list.
*
*
Implementation note: this is a default method only for backward compatibility. The default
* implementation calls {@link #value(CqlIdentifier, Term)} in a loop; it should be overridden if
* a more efficient alternative exists.
*/
@NonNull
default RegularInsert valuesByIds(@NonNull Map newAssignments) {
if (newAssignments.isEmpty()) {
throw new IllegalArgumentException("newAssignments can't be empty");
}
RegularInsert result = null;
for (Map.Entry entry : newAssignments.entrySet()) {
result = (result == null ? this : result).value(entry.getKey(), entry.getValue());
}
return result;
}
/** Shortcut for {@link #valuesByIds(Map)} when the keys are plain strings. */
@NonNull
default RegularInsert values(@NonNull Map newAssignments) {
return valuesByIds(CqlIdentifiers.wrapKeys(newAssignments));
}
}