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 * Copyright DataStax, Inc.
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 * 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
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 * http://www.apache.org/licenses/LICENSE-2.0
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package com.datastax.oss.driver.api.core.data;

import com.datastax.oss.driver.api.core.CqlIdentifier;
import com.datastax.oss.driver.api.core.type.DataType;
import com.datastax.oss.driver.internal.core.util.Loggers;
import edu.umd.cs.findbugs.annotations.NonNull;
import java.util.Collections;
import java.util.List;

A data structure where the values are accessible via a CQL identifier.

In the driver, these data structures are always accessible by index as well.

/** * A data structure where the values are accessible via a CQL identifier. * * <p>In the driver, these data structures are always accessible by index as well. */
public interface AccessibleById extends AccessibleByIndex {
Returns all the indices where a given identifier appears.
Throws:
  • IllegalArgumentException – if the id is invalid.
API Note:the default implementation only exists for backward compatibility. It wraps the result of firstIndexOf(CqlIdentifier) in a singleton list, which is not entirely correct, as it will only return the first occurrence. Therefore it also logs a warning.

Implementors should always override this method (all built-in driver implementations do).

/** * Returns all the indices where a given identifier appears. * * @throws IllegalArgumentException if the id is invalid. * @apiNote the default implementation only exists for backward compatibility. It wraps the result * of {@link #firstIndexOf(CqlIdentifier)} in a singleton list, which is not entirely correct, * as it will only return the first occurrence. Therefore it also logs a warning. * <p>Implementors should always override this method (all built-in driver implementations * do). */
@NonNull default List<Integer> allIndicesOf(@NonNull CqlIdentifier id) { Loggers.ACCESSIBLE_BY_ID.warn( "{} should override allIndicesOf(CqlIdentifier), the default implementation is a " + "workaround for backward compatibility, it only returns the first occurrence", getClass().getName()); return Collections.singletonList(firstIndexOf(id)); }
Returns the first index where a given identifier appears (depending on the implementation, identifiers may appear multiple times).
Throws:
  • IllegalArgumentException – if the id is invalid.
/** * Returns the first index where a given identifier appears (depending on the implementation, * identifiers may appear multiple times). * * @throws IllegalArgumentException if the id is invalid. */
int firstIndexOf(@NonNull CqlIdentifier id);
Returns the CQL type of the value for the first occurrence of id.

If you want to avoid the overhead of building a CqlIdentifier, use the variant of this method that takes a string argument.

Throws:
/** * Returns the CQL type of the value for the first occurrence of {@code id}. * * <p>If you want to avoid the overhead of building a {@code CqlIdentifier}, use the variant of * this method that takes a string argument. * * @throws IllegalArgumentException if the id is invalid. */
@NonNull DataType getType(@NonNull CqlIdentifier id); }