com.facebook.presto.jdbc.internal.spi.QueryId Maven / Gradle / Ivy
/*
* 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.facebook.presto.jdbc.internal.spi;
import com.facebook.presto.jdbc.internal.drift.annotations.ThriftConstructor;
import com.facebook.presto.jdbc.internal.drift.annotations.ThriftField;
import com.facebook.presto.jdbc.internal.drift.annotations.ThriftStruct;
import com.facebook.presto.jdbc.internal.jackson.annotation.JsonCreator;
import com.facebook.presto.jdbc.internal.jackson.annotation.JsonValue;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
import static java.lang.String.format;
import static java.util.Collections.unmodifiableList;
import static java.util.Objects.requireNonNull;
@ThriftStruct
public final class QueryId
{
@JsonCreator
public static QueryId valueOf(String queryId)
{
// ID is verified in the constructor
return new QueryId(queryId);
}
private final String id;
@ThriftConstructor
public QueryId(String id)
{
this.id = validateId(id);
}
@ThriftField(1)
public String getId()
{
return id;
}
@Override
@JsonValue
public String toString()
{
return id;
}
@Override
public int hashCode()
{
return Objects.hash(id);
}
@Override
public boolean equals(Object obj)
{
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
QueryId other = (QueryId) obj;
return Objects.equals(this.id, other.id);
}
//
// Id helper methods
//
// Check if the string matches [_a-z0-9]+ , but without the overhead of regex
private static final boolean isIdMatchPattern(String id)
{
if (id.length() == 0) {
return false;
}
for (int i = 0; i < id.length(); i++) {
char c = id.charAt(i);
if (!(c == '_' || c >= 'a' && c <= 'z' || c >= '0' && c <= '9')) {
return false;
}
}
return true;
}
public static String validateId(String id)
{
requireNonNull(id, "id is null");
checkArgument(!id.isEmpty(), "id is empty");
checkArgument(isIdMatchPattern(id), "Invalid id %s", id);
return id;
}
public static List parseDottedId(String id, int expectedParts, String name)
{
requireNonNull(id, "id is null");
checkArgument(expectedParts > 0, "expectedParts must be at least 1");
requireNonNull(name, "name is null");
List ids = unmodifiableList(Arrays.asList(id.split("\\.")));
checkArgument(ids.size() == expectedParts, "Invalid %s %s", name, id);
for (String part : ids) {
checkArgument(!part.isEmpty(), "Invalid id %s", id);
checkArgument(isIdMatchPattern(part), "Invalid id %s", id);
}
return ids;
}
private static void checkArgument(boolean condition, String message, Object... messageArgs)
{
if (!condition) {
throw new IllegalArgumentException(format(message, messageArgs));
}
}
}
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