kudu::client::KuduSchemaBuilder Class Reference

Builder API for constructing a KuduSchema object. More...

#include <schema.h>

Public Member Functions
KuduColumnSpec *	AddColumn (const std::string &name)
KuduSchemaBuilder *	SetPrimaryKey (const std::vector< std::string > &key_col_names)
Status	Build (KuduSchema *schema)

Detailed Description

Builder API for constructing a KuduSchema object.

The API here is a "fluent" style of programming, such that the resulting code looks somewhat like a SQL "CREATE TABLE" statement. For example:

SQL:

CREATE TABLE t (
  my_key int not null primary key,
  a float default 1.5
);

is represented as:

KuduSchemaBuilder t;
t.AddColumn("my_key")->Type(KuduColumnSchema::INT32)->NotNull()->PrimaryKey();
t.AddColumn("a")->Type(KuduColumnSchema::FLOAT)->Default(KuduValue::FromFloat(1.5));
KuduSchema schema;
t.Build(&schema);

Member Function Documentation

KuduColumnSpec* kudu::client::KuduSchemaBuilder::AddColumn

(

const std::string &

name

)

Add a column with the specified name to the schema.

Parameters

[in]

name

Name of the column to add.

Returns

A KuduColumnSpec object for a new column within the Schema. The returned object is owned by the KuduSchemaBuilder.

Status kudu::client::KuduSchemaBuilder::Build

(

KuduSchema *

schema

)

Build the schema based on current configuration of the builder object.

Parameters

[out]

schema

The placeholder for the result schema. Upon successful completion, the parameter is reset to the result of this builder: literally, calling KuduSchema::Reset() on the parameter.

Returns

Operation result status. If the resulting would-be-schema is invalid for any reason (e.g. missing types, duplicate column names, etc.) a bad Status is returned.

KuduSchemaBuilder* kudu::client::KuduSchemaBuilder::SetPrimaryKey

(

const std::vector< std::string > &

key_col_names

)

Set the primary key of the new Schema based on the given column names.

This may be used to specify a compound primary key.

Parameters

[in]

key_col_names

Names of the columns to include into the compound primary key.

Returns

Pointer to the modified object.

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The documentation for this class was generated from the following file:

• include/kudu/client/schema.h