定数ディレクティブの使用
|
DataWeave 2.1 は Mule 4.1 と互換性があります。 Mule 4.1 の標準サポートは 2020 年 11 月 2 日に終了しました。このバージョンの Mule は、拡張サポートが終了する 2022 年 11 月 2 日にそのすべてのサポートが終了します。 このバージョンの Mule を使用する CloudHub には新しいアプリケーションをデプロイできなくなります。許可されるのはアプリケーションへのインプレース更新のみになります。 標準サポートが適用されている最新バージョンの Mule 4 にアップグレードすることをお勧めします。これにより、最新の修正とセキュリティ機能強化を備えたアプリケーションが実行されます。 |
この DataWeave の例では、DataWeave ヘッダーで変数 (var) として定義された定数から URL をビルドします。また、入力に存在する項目を条件付きで出力します。
次の関数を使用します。
-
定数ディレクティブを URL にビルドする
++ (連結)。 -
入力の項目を調べる
map。 -
summary および brand 項目を出力する if。
DataWeave
%dw 2.0
output application/json
var baseUrl = "http://alainn-cosmetics.cloudhub.io/api/v1.0"
var urlPage = "http://alainn-cosmetics.cloudhub.io/api/v1.0/items"
var fullUrl = "http://alainn-cosmetics.cloudhub.io/api/v1.0/items"
var pageIndex = 0
var requestedPageSize = 4
---
using (pageSize = payload.getItemsResponse.PageInfo.pageSize) {
links: [
{
href: fullUrl,
rel : "self"
},
{
href: urlPage ++ "?pageIndex=" ++ (pageIndex + pageSize) ++ "&pageSize=" ++ requestedPageSize,
rel: "next"
},
({
href: urlPage ++ "?pageIndex=" ++ (pageIndex - pageSize) ++ "&pageSize=" ++ requestedPageSize,
rel: "prev"
}) if(pageIndex > 0)
],
collection: {
size: pageSize,
items: payload.getItemsResponse.*Item map (item) -> {
id: item.id,
'type': item.'type',
name: item.name,
(summary: item.summary) if(item.summary?),
(brand: item.brand) if(item.brand?),
links: (item.images.*image map (image) -> {
href: trim(image),
rel: image.@'type'
}) + {
href: baseUrl ++ "/" ++ item.id,
rel: "self"
}
}
}
}入力 XML
<ns0:getItemsResponse xmlns:ns0="http://www.alainn.com/SOA/message/1.0">
<ns0:PageInfo>
<pageIndex>0</pageIndex>
<pageSize>5</pageSize>
</ns0:PageInfo>
<ns1:Item xmlns:ns1="http://www.alainn.com/SOA/model/1.0">
<id>B0015BYNRO</id>
<type>Oils</type>
<name>Now Foods LANOLIN PURE</name>
<images>
<image type="SwatchImage">http://ecx.images-amazon.com/images/I/11Qoe774Q4L._SL30_.jpg
</image>
</images>
</ns1:Item>
<ns1:Item xmlns:ns1="http://www.alainn.com/SOA/model/1.0">
<id>B002K8AD02</id>
<type>Bubble Bath</type>
<name>Deep Steep Honey Bubble Bath</name>
<summary>Disclaimer: This website is for informational purposes only.
Always check the actual product label in your possession for the most
accurate ingredient information due to product changes or upgrades
that may not yet be reflected on our web site. These statements made
in this website have not been evaluated by the Food and Drug
Administration. The products offered are not intended to diagnose,
treat
</summary>
<images>
<image type="SwatchImage">http://ecx.images-amazon.com/images/I/216ytnMOeXL._SL30_.jpg
</image>
</images>
</ns1:Item>
<ns1:Item xmlns:ns1="http://www.alainn.com/SOA/model/1.0">
<id>B000I206JK</id>
<type>Oils</type>
<name>Now Foods Castor Oil</name>
<summary>One of the finest natural skin emollients available</summary>
<images>
<image type="SwatchImage">http://ecx.images-amazon.com/images/I/21Yz8q-yQoL._SL30_.jpg
</image>
</images>
</ns1:Item>
<ns1:Item xmlns:ns1="http://www.alainn.com/SOA/model/1.0">
<id>B003Y5XF2S</id>
<type>Chemical Hair Dyes</type>
<name>Manic Panic Semi-Permanent Color Cream</name>
<summary>Ready to use, no mixing required</summary>
<images>
<image type="SwatchImage">http://ecx.images-amazon.com/images/I/51A2FuX27dL._SL30_.jpg
</image>
</images>
</ns1:Item>
<ns1:Item xmlns:ns1="http://www.alainn.com/SOA/model/1.0">
<id>B0016BELU2</id>
<type>Chemical Hair Dyes</type>
<name>Herbatint Herbatint Permanent Chestnut (4n)</name>
<images>
<image type="SwatchImage">http://ecx.images-amazon.com/images/I/21woUiM0BdL._SL30_.jpg
</image>
</images>
</ns1:Item>
</ns0:getItemsResponse>出力 JSON
{
"links": [
{
"href": "http://alainn-cosmetics.cloudhub.io/api/v1.0/items",
"rel": "self"
},
{
"href": "http://alainn-cosmetics.cloudhub.io/api/v1.0/items?pageIndex=5&pageSize=4",
"rel": "next"
}
],
"collection": {
"size": "5",
"items": [
{
"id": "B0015BYNRO",
"type": "Oils",
"name": "Now Foods LANOLIN PURE",
"links": [
{
"href": "http://ecx.images-amazon.com/images/I/11Qoe774Q4L._SL30_.jpg",
"rel": "SwatchImage"
},
{
"href": "http://alainn-cosmetics.cloudhub.io/api/v1.0/B0015BYNRO",
"rel": "self"
}
]
},
{
"id": "B002K8AD02",
"type": "Bubble Bath",
"name": "Deep Steep Honey Bubble Bath",
"summary": "Disclaimer: This website is for informational purposes only.\n Always check the actual product label in your possession for the most\n accurate ingredient information due to product changes or upgrades\n that may not yet be reflected on our web site. These statements made\n in this website have not been evaluated by the Food and Drug\n Administration. The products offered are not intended to diagnose,\n treat\n ",
"links": [
{
"href": "http://ecx.images-amazon.com/images/I/216ytnMOeXL._SL30_.jpg",
"rel": "SwatchImage"
},
{
"href": "http://alainn-cosmetics.cloudhub.io/api/v1.0/B002K8AD02",
"rel": "self"
}
]
},
{
"id": "B000I206JK",
"type": "Oils",
"name": "Now Foods Castor Oil",
"summary": "One of the finest natural skin emollients available",
"links": [
{
"href": "http://ecx.images-amazon.com/images/I/21Yz8q-yQoL._SL30_.jpg",
"rel": "SwatchImage"
},
{
"href": "http://alainn-cosmetics.cloudhub.io/api/v1.0/B000I206JK",
"rel": "self"
}
]
},
{
"id": "B003Y5XF2S",
"type": "Chemical Hair Dyes",
"name": "Manic Panic Semi-Permanent Color Cream",
"summary": "Ready to use, no mixing required",
"links": [
{
"href": "http://ecx.images-amazon.com/images/I/51A2FuX27dL._SL30_.jpg",
"rel": "SwatchImage"
},
{
"href": "http://alainn-cosmetics.cloudhub.io/api/v1.0/B003Y5XF2S",
"rel": "self"
}
]
},
{
"id": "B0016BELU2",
"type": "Chemical Hair Dyes",
"name": "Herbatint Herbatint Permanent Chestnut (4n)",
"links": [
{
"href": "http://ecx.images-amazon.com/images/I/21woUiM0BdL._SL30_.jpg",
"rel": "SwatchImage"
},
{
"href": "http://alainn-cosmetics.cloudhub.io/api/v1.0/B0016BELU2",
"rel": "self"
}
]
}
]
}
}