solr相关配置翻译
solr相关配置翻译name: mandatory - the name for the field
name : 字段名称，必填
type: mandatory - the name of a field type from the fieldTypes
type: 字段类型集中fieldTypes的字段类型名称,必填
indexed: true if this field should be indexed (searchable or sortable)
indexed: 设置为true的话该字段将被索引（可以查询或排序）
stored: true if this field should be retrievable
stored: 设置为true表示该字段将被存储; false时查询时不返回该内容，但不影响索引
docValues: true if this field should have doc values. Doc values are
useful for> not required, doc values will make the index faster to load, more
NRT-friendly and more memory-efficient. They however come with some
limitations: they are currently only supported by StrField, UUIDField
and all TrieFields, and depending on the field type, they might
require the field to be single-valued, be required or have a default
value (check the documentation of the field type you're interested in
for more information)
docValues: 设置为true该字段应该有docValues, docValues有益于faceting,grouping,sorting和函数查询，docValues将使索引加载更快，近实时查询(NRT?)更有好，更加节省内存.但是也有一些限制，当前仅StrField，UUIDField和所有的 Trie(字典树）类型支持)，而且依赖字段类型，可能要求字段为单值的（single-valued），必填或有默认值
multiValued: true if this field may contain multiple values per document
multiValued：设置为true如果该字段在单个文档中可以有多个值
omitNorms: (expert) set to true to omit the norms associated with
this field (this disables length normalization and index-time
boosting for the field, and saves some memory). Only full-text
fields or fields that need an index-time boost need norms.
Norms are omitted for primitive (non-analyzed) types by default.
omitNorms：(专业级)设置为true将忽略些字段上关联的规则(将禁用对于此字段的长度标准化及索引时间及内存的优化）.只有纯文本或需要索引时间优化的字段需要规则。原始类型(不要分解)默认忽略规则。
termVectors: set to true to store the term vector for a
given field.When using MoreLikeThis, fields used for similarity should be
stored for best performance.
termVectors：[默认false]设置为true将保存索引向量
termPositions: Store position information with the term vector.
This will increase storage costs.
termPositions：保存索引向量位置信息
termOffsets: Store offset information with the term vector.
This will increase storage costs.
termOffsets：保存索引向量偏移信息
required: The field is required. It will throw an error if the
value does not exist
required：该字段是必须的，如果没有将报错
default: a value that should be used if no value is specified
when adding a document.
default: 增加文档时，如果该字段未指定值，将使用该默认值
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