object TableObj extends Error
The Table object provides functions for the Table companion objects.
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- type Row = Vector[Any]
Type definition for a row/tuple
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- final def ##: Int
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- val CSV: String
File-name extension for CSV data files
- val JSON: String
File-name extension for JSON data files
- val SER: String
File-name extension for serialized tables FIX: investigate using more efficient serialization, e.g.,
File-name extension for serialized tables FIX: investigate using more efficient serialization, e.g.,
- See also
github.com/EsotericSoftware/kryo
- val SP: Char
The token/element separation character (',' for CSV)
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- def nullTuple(domain: String): Row
Create a tuple with missing values for each column according to the given domains.
Create a tuple with missing values for each column according to the given domains. This function is used by 'leftJoin' and 'rightJoin'.
- domain
the domains of the table for which a null tuple is required
- def project(tuple: Row, cPos: IndexedSeq[Int]): Row
Given row 'tuple', project onto the given column positions specified in 'cPos'.
Given row 'tuple', project onto the given column positions specified in 'cPos'.
- tuple
the row on which to apply the projection
- cPos
the column positions
- def projectD(dom: String, cPos: IndexedSeq[Int]): String
Given a domain string 'dom', project onto the given column positions specified in 'cPos'.
Given a domain string 'dom', project onto the given column positions specified in 'cPos'.
- dom
the domain string on which to apply the projection
- cPos
the column positions
- def sameOn(t: Row, u: Row, tp: ArrayBuffer[Int], up: ArrayBuffer[Int]): Boolean
Determine whether 't' and 'u' are the same on column positions 'tp' and 'up'.
Determine whether 't' and 'u' are the same on column positions 'tp' and 'up'.
- t
the first tuple
- u
the second tuple
- tp
the column positions for tuple t
- up
the column positions for tuple u
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- def ucount(): Int
Return the next unique count.
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