Java TypeHint.getTypeInfo方法代码示例

import org.apache.flink.api.common.typeinfo.TypeHint; //导入方法依赖的package包/类
/**
 * Creates a new named {@code OutputTag} with the given id.
 *
 * @param id The id of the created {@code OutputTag}.
    */
public OutputTag(String id) {
	Preconditions.checkNotNull(id, "OutputTag id cannot be null.");
	Preconditions.checkArgument(!id.isEmpty(), "OutputTag id must not be empty.");
	this.id = id;

	try {
		TypeHint<T> typeHint = new TypeHint<T>(OutputTag.class, this, 0) {};
		this.typeInfo = typeHint.getTypeInfo();
	} catch (InvalidTypesException e) {
		throw new InvalidTypesException("Could not determine TypeInformation for generic " +
				"OutputTag type. Did you forget to make your OutputTag an anonymous inner class?", e);
	}
}
 

import org.apache.flink.api.common.typeinfo.TypeHint; //导入方法依赖的package包/类
/**
 * Returns a future holding the request result.
 * @param jobId                     JobID of the job the queryable state belongs to.
 * @param queryableStateName        Name under which the state is queryable.
 * @param key			            The key we are interested in.
 * @param keyTypeHint				A {@link TypeHint} used to extract the type of the key.
 * @param stateDescriptor			The {@link StateDescriptor} of the state we want to query.
 * @return Future holding the immutable {@link State} object containing the result.
 */
@PublicEvolving
public <K, S extends State, V> CompletableFuture<S> getKvState(
		final JobID jobId,
		final String queryableStateName,
		final K key,
		final TypeHint<K> keyTypeHint,
		final StateDescriptor<S, V> stateDescriptor) {

	Preconditions.checkNotNull(keyTypeHint);

	TypeInformation<K> keyTypeInfo = keyTypeHint.getTypeInfo();
	return getKvState(jobId, queryableStateName, key, keyTypeInfo, stateDescriptor);
}
 

import org.apache.flink.api.common.typeinfo.TypeHint; //导入方法依赖的package包/类
/**
 * Returns a future holding the request result.	 *
 * @param jobId                     JobID of the job the queryable state belongs to.
 * @param queryableStateName        Name under which the state is queryable.
 * @param key			            The key we are interested in.
 * @param keyTypeHint				A {@link TypeHint} used to extract the type of the key.
 * @param stateDescriptor			The {@link StateDescriptor} of the state we want to query.
 * @return Future holding the immutable {@link State} object containing the result.
 */
@PublicEvolving
public <K, S extends State, V> CompletableFuture<S> getKvState(
		final JobID jobId,
		final String queryableStateName,
		final K key,
		final TypeHint<K> keyTypeHint,
		final StateDescriptor<S, V> stateDescriptor) {

	Preconditions.checkNotNull(keyTypeHint);

	TypeInformation<K> keyTypeInfo = keyTypeHint.getTypeInfo();
	return getKvState(jobId, queryableStateName, key, keyTypeInfo, stateDescriptor);
}
 

import org.apache.flink.api.common.typeinfo.TypeHint; //导入方法依赖的package包/类
/**
 * Returns a future holding the request result.
 *
 * <p>If the server does not serve a KvState instance with the given ID,
 * the Future will be failed with a {@link UnknownKvStateID}.
 *
 * <p>If the KvState instance does not hold any data for the given key
 * and namespace, the Future will be failed with a {@link UnknownKeyOrNamespace}.
 *
 * <p>All other failures are forwarded to the Future.
 *
 * @param jobId                     JobID of the job the queryable state belongs to.
 * @param queryableStateName        Name under which the state is queryable.
 * @param key			            The key we are interested in.
 * @param keyTypeHint				A {@link TypeHint} used to extract the type of the key.
 * @param stateDescriptor			The {@link StateDescriptor} of the state we want to query.
 * @return Future holding the result.
 */
@PublicEvolving
public <K, V> Future<V> getKvState(
		final JobID jobId,
		final String queryableStateName,
		final K key,
		final TypeHint<K> keyTypeHint,
		final StateDescriptor<?, V> stateDescriptor) {

	Preconditions.checkNotNull(keyTypeHint);

	TypeInformation<K> keyTypeInfo = keyTypeHint.getTypeInfo();
	return getKvState(jobId, queryableStateName, key, keyTypeInfo, stateDescriptor);
}