<field name="id" type="string" indexed="true" stored="true" required="true" multiValued="false" />
常用的公共属性有:
name: 标识.
type:fieldType 定义的类型.
indexed=true|false: 是否被用来建立索引 (关系到搜索和排序)
stored=true|false: 是否储存
compressed=true|false, 是否使用 gzip 压缩 (只有 TextField 和 StrField 可以压缩)
compressThreshold = 压缩阀值
multiValued=true|false 是否包含多个值, 即一个名字可以被多个 document 所用.
omitNorms=true|false 这是个高级选项. 设置为 true, 省略与这一 field 相关的规范 (这将禁用长度规范化和索引时间权重 ( index-time boosting for the field), 并节省一些内存). 仅仅用在全文本 field.
termVectors=false|true 如果设置为 true, 则包含了所有的 term vector 信息. 通常用的属性有:
termPositions="true": 存储 term vector 中的地址信息, 会消耗存储开销.
termOffsets: 存储 term vector 的偏移量, 会消耗存储开销.
更多有关信息请参考: http://wiki.apache.org/solr/TermVectorComponent
omitTermFreqAndPositions=true|false 如果设置, 省略掉 freq 和 term vector 中的地址信息
omitPositions=true|false 如果设置, 省略掉 term vector 中的地址信息
default: 如果没有属性需要修改, 就可以用这个标识下.
- Common options that fields can have are...
- default
- The default value for this field if none is provided while adding documents
- indexed=true|false
- True if this field should be "indexed". If (and only if) a field is indexed, then it is searchable, sortable, and facetable.
- stored=true|false
- True if the value of the field should be retrievable during a search, or if you're using highlighting or MoreLikeThis.
- compressed=true|false
- True if this field should be stored using gzip compression. (This will only apply if the field type is compressible; among the standard field types, only TextField and StrField are.)
- compressThreshold=<integer>
- multiValued=true|false
- True if this field may contain multiple values per document, i.e. if it can appear multiple times in a document
- omitNorms=true|false
- This is arguably an advanced option.
- 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.
- termVectors=false|true <?> Solr 1.1
- If set, include full term vector info.
- If enabled, often also used with termPositions="true" and termOffsets="true".
- To use interactively, requires TermVectorComponent
- Corresponds to TV button in Luke, and V field attribute.
- omitTermFreqAndPositions=true|false <!> Solr1.4
- If set, omit term freq, positions and payloads from postings for this field. This can be a performance boost for fields that don't require that information and reduces storage space required for the index. Queries that rely on position that are issued on a field with this option fail with an exception. Prior to <!> Solr4.0 the queries would silently fail to find documents.
- omitPositions=true|false <!> Solr3.4
- If set, omits positions, but keeps term frequencies
来源: http://www.bubuko.com/infodetail-3013544.html