<?xml version="1.0" encoding="ISO-8859-1"?>
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 Copyright (c) 2018, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* 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.
-->

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified"
           targetNamespace="http://ws.apache.org/ns/synapse"
           xmlns="http://ws.apache.org/ns/synapse">

    <xs:include schemaLocation="../../misc/common.xsd"/>

    <xs:element name="publishEvent">
        <xs:annotation>
            <xs:documentation source="description">
                Constructs events and publishes them to different systems such as WSO2 BAM/DAS/CEP/SP via event sinks.
            </xs:documentation>
        </xs:annotation>
        <xs:complexType>
            <xs:sequence>
                <xs:element name="eventSink" minOccurs="1" maxOccurs="1"/>
                <xs:element name="streamName" minOccurs="1" maxOccurs="1"/>
                <xs:element name="streamVersion" minOccurs="1" maxOccurs="1"/>
                <xs:element name="attributes" minOccurs="1" maxOccurs="1">
                    <xs:complexType>
                        <xs:sequence>
                            <xs:element name="meta" minOccurs="1" maxOccurs="1">
                                <xs:complexType>
                                    <xs:sequence>
                                        <xs:element ref="attribute" minOccurs="1" maxOccurs="1"/>
                                    </xs:sequence>
                                </xs:complexType>
                            </xs:element>
                            <xs:element name="correlation" minOccurs="1" maxOccurs="1">
                                <xs:complexType>
                                    <xs:sequence>
                                        <xs:element ref="attribute" minOccurs="1" maxOccurs="1"/>
                                    </xs:sequence>
                                </xs:complexType>
                            </xs:element>
                            <xs:element name="payload" minOccurs="1" maxOccurs="1">
                                <xs:complexType>
                                    <xs:sequence>
                                        <xs:element ref="attribute" minOccurs="1" maxOccurs="1"/>
                                    </xs:sequence>
                                </xs:complexType>
                            </xs:element>
                            <xs:element name="arbitrary" minOccurs="1" maxOccurs="1">
                                <xs:complexType>
                                    <xs:sequence>
                                        <xs:element name="attribute" >
                                            <xs:complexType>
                                                <xs:attribute name="name" type="xs:string" use="required"/>
                                                <xs:attribute name="dataType" type="xs:string" use="required"/>
                                                <xs:attribute name="default" type="xs:string" use="required"/>
                                                <xs:attribute name="value" type="xs:string" use="required"/>
                                            </xs:complexType>
                                        </xs:element>
                                    </xs:sequence>
                                </xs:complexType>
                            </xs:element>
                        </xs:sequence>
                    </xs:complexType>
                </xs:element>
            </xs:sequence>
        </xs:complexType>
    </xs:element>

    <xs:element name="attribute" >
        <xs:complexType>
            <xs:attribute name="name" type="xs:string" use="required"/>
            <xs:attribute name="dataType" type="xs:string" use="required"/>
            <xs:attribute name="default" type="xs:string" use="required"/>
            <xs:attributeGroup ref="valueOrExpression"/>
        </xs:complexType>
    </xs:element>

</xs:schema>