74 lines
1.9 KiB
Go
74 lines
1.9 KiB
Go
package document
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import (
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"github.com/couchbaselabs/bleve/analysis"
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)
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const DEFAULT_COMPOSITE_INDEXING_OPTIONS = INDEX_FIELD
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type CompositeField struct {
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name string
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includedFields map[string]bool
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excludedFields map[string]bool
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defaultInclude bool
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options IndexingOptions
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totalLength int
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compositeFrequencies analysis.TokenFrequencies
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}
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func NewCompositeField(name string, defaultInclude bool, include []string, exclude []string) *CompositeField {
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return NewCompositeFieldWithIndexingOptions(name, defaultInclude, include, exclude, DEFAULT_COMPOSITE_INDEXING_OPTIONS)
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}
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func NewCompositeFieldWithIndexingOptions(name string, defaultInclude bool, include []string, exclude []string, options IndexingOptions) *CompositeField {
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rv := &CompositeField{
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name: name,
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options: options,
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defaultInclude: defaultInclude,
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includedFields: make(map[string]bool, len(include)),
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excludedFields: make(map[string]bool, len(exclude)),
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}
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for _, i := range include {
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rv.includedFields[i] = true
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}
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for _, e := range exclude {
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rv.excludedFields[e] = true
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}
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return rv
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}
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func (c *CompositeField) Name() string {
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return c.name
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}
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func (c *CompositeField) Options() IndexingOptions {
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return c.options
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}
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func (c *CompositeField) Analyze() (int, analysis.TokenFrequencies) {
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return c.totalLength, c.compositeFrequencies
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}
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func (c *CompositeField) Value() []byte {
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return []byte{}
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}
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func (c *CompositeField) Compose(field string, length int, freq analysis.TokenFrequencies) {
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shouldInclude := c.defaultInclude
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_, fieldShouldBeIncluded := c.includedFields[field]
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if fieldShouldBeIncluded {
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shouldInclude = true
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}
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_, fieldShouldBeExcluded := c.excludedFields[field]
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if fieldShouldBeExcluded {
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shouldInclude = false
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}
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if shouldInclude {
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c.totalLength += length
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c.compositeFrequencies = c.compositeFrequencies.MergeAll(field, freq)
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}
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}
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