44 lines
638 B
Go
44 lines
638 B
Go
package dbr
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type union struct {
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builder []Builder
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all bool
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}
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func Union(builder ...Builder) interface {
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Builder
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As(string) Builder
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} {
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return &union{
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builder: builder,
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}
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}
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func UnionAll(builder ...Builder) interface {
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Builder
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As(string) Builder
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} {
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return &union{
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builder: builder,
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all: true,
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}
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}
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func (u *union) Build(d Dialect, buf Buffer) error {
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for i, b := range u.builder {
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if i > 0 {
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buf.WriteString(" UNION ")
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if u.all {
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buf.WriteString("ALL ")
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}
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}
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buf.WriteString(placeholder)
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buf.WriteValue(b)
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}
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return nil
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}
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func (u *union) As(alias string) Builder {
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return as(u, alias)
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}
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