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[英]How to get matched field value of array field using painless script in Elasticsearch?
[英]In Elasticsearch how can I get field length using the painless script?
如果某个字段比索引中的现有字段长,我正在尝试更新该字段,但是这些函数似乎都无法获取字段的长度
ctx._source.description.length() < params.description.length()
ctx._source.description.size() < params.description.size()
ctx._source.description.length < params.description.length
我得到相同的错误,即这些方法不存在。 知道如何实现这一目标吗?
编辑:
这是我得到的错误:
array:1 [
"update" => array:5 [
"_index" => "products_a"
"_type" => "_doc"
"_id" => "XjouMXoBeY37PI1TSOQl"
"status" => 400
"error" => array:3 [
"type" => "illegal_argument_exception"
"reason" => "failed to execute script"
"caused_by" => array:6 [
"type" => "script_exception"
"reason" => "runtime error"
"script_stack" => array:2 [
0 => """
if (ctx._source.description.length()<params.description.length()) {\n
\t\t\t\t\t\t\t\t
"""
1 => " ^---- HERE"
]
"script" => "add_new_seller_to_existing_doc"
"lang" => "painless"
"caused_by" => array:2 [
"type" => "illegal_argument_exception"
"reason" => "dynamic method [java.util.ArrayList, length/0] not found"
]
]
]
]
]
编辑2:
存储脚本
$params = [
'id' => 'add_new_seller_to_existing_doc',
'body' => [
'script' => [
'lang' => 'painless',
'source' =>
'if(params.containsKey(\'description\')){
if (!ctx._source.containsKey(\'description\')) {
ctx._source.description=params.description;
} else if (ctx._source.description.length()<params.description.length()) {
ctx._source.description=params.description;
}
}'
]
]
];
批量更新命令:
$bulk_obj['body'][] = ['update' => ['_id' => $id, '_index' => 'products']];
$bulk_obj['body'][] = ['id' => 'add_new_seller_to_existing_doc', 'params' => ['description'=>'some_description']];
问题似乎是description
字段是一个 ArrayList 而你认为它是一个字符串。
要么使用ArrayList.size()
要么将 ArrayList 转换为字符串(如果它只包含一个字符串),然后您可以使用String.length()
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