LogicalSchema.Builder¶

LogicalSchema.Builder is used to create a schema.

Creating Instance¶

LogicalSchema.Builder takes the following to be created:

• Columns

LogicalSchema.Builder is created when:

• LogicalSchema is requested to builder and asBuilder

Columns¶

LogicalSchema.Builder is given Columns that are added to columns registry (using keyColumn, headerColumn and valueColumn for KEY, HEADERS and VALUE columns, respectively).

The columns are then used to build a LogicalSchema.

Creating LogicalSchema¶

LogicalSchema build()

build creates a LogicalSchema with the columns.

build is used when:

• FIXME

headerColumn¶

Builder headerColumn(
  ColumnName columnName,
  Optional<String> headerKey)
Builder headerColumn(
  Column column)

headerColumn...FIXME

headerColumn is used when:

• LogicalSchema.Builder is created and headerColumns
• TableElements is requested to toLogicalSchema

headerColumns¶

Builder headerColumns(
  Iterable<? extends Column> columns)

headerColumns adds every column in the given columns and returns this LogicalSchema.Builder.

headerColumns is used when:

• QueryProjectNode is requested to buildPullQuerySelectStarSchema

addColumn¶

void addColumn(
  Column column)

addColumn...FIXME

addColumn is used when:

• LogicalSchema.Builder is requested to add a header, key, value column