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/*
* Copyright 2016-2019 the original author or authors.
*
* 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 org.glowroot.instrumentation.api;
/**
* The detail map can contain only {@link String}, {@link Number}, {@link Boolean} and null values.
* It can also contain nested lists of {@link String}, {@link Number}, {@link Boolean} and null
* values (in particular, lists elements cannot other lists or maps). And it can contain any level
* of nested maps whose keys are {@link String} and whose values are one of the above types
* (including lists). The detail map cannot have null keys.
*
* Lists are supported to simulate multimaps, e.g. for http request parameters and http headers,
* both of which can have multiple values for the same key.
*
* The detail map does not need to be thread safe as long as it is only instantiated in response to
* either MessageSupplier.get() or Message.getDetail() which are called by the thread that needs the
* map.
*/
public abstract class QueryMessage {
}