Package org.apache.druid.sql.calcite.schema

Class SystemServerPropertiesTable

java.lang.Object

org.apache.calcite.schema.impl.AbstractTable

org.apache.druid.sql.calcite.schema.SystemServerPropertiesTable

All Implemented Interfaces:

org.apache.calcite.schema.ScannableTable, org.apache.calcite.schema.Table, org.apache.calcite.schema.Wrapper

public class SystemServerPropertiesTable
extends org.apache.calcite.schema.impl.AbstractTable
implements org.apache.calcite.schema.ScannableTable

System schema table sys.server_properties that contains the properties of all Druid servers. Each row contains the value of a single property. If a server has multiple node roles, all the rows for that server would have multiple values in the column node_roles rather than duplicating all the rows.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	TABLE_NAME

Constructor Summary

Constructors

Constructor	Description
SystemServerPropertiesTable(DruidNodeDiscoveryProvider druidNodeDiscoveryProvider, AuthorizerMapper authorizerMapper, HttpClient httpClient, com.fasterxml.jackson.databind.ObjectMapper jsonMapper)

Method Summary

Modifier and Type	Method	Description
org.apache.calcite.schema.Schema.TableType	getJdbcTableType()
org.apache.calcite.rel.type.RelDataType	getRowType(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)
org.apache.calcite.linq4j.Enumerable<Object[]>	scan(org.apache.calcite.DataContext root)

Methods inherited from class org.apache.calcite.schema.impl.AbstractTable

getStatistic, isRolledUp, rolledUpColumnValidInsideAgg, unwrap

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.calcite.schema.Table

getStatistic, isRolledUp, rolledUpColumnValidInsideAgg

Methods inherited from interface org.apache.calcite.schema.Wrapper

maybeUnwrap, unwrapOrThrow

Field Details

TABLE_NAME

public static final String TABLE_NAME

See Also:

• Constant Field Values

Constructor Details

SystemServerPropertiesTable

public SystemServerPropertiesTable(DruidNodeDiscoveryProvider druidNodeDiscoveryProvider,
 AuthorizerMapper authorizerMapper,
 HttpClient httpClient,
 com.fasterxml.jackson.databind.ObjectMapper jsonMapper)

Method Details

getRowType

public org.apache.calcite.rel.type.RelDataType getRowType(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)

Specified by:

getRowType in interface org.apache.calcite.schema.Table

getJdbcTableType

public org.apache.calcite.schema.Schema.TableType getJdbcTableType()

Specified by:

getJdbcTableType in interface org.apache.calcite.schema.Table

Overrides:

getJdbcTableType in class org.apache.calcite.schema.impl.AbstractTable

scan

public org.apache.calcite.linq4j.Enumerable<Object[]> scan(org.apache.calcite.DataContext root)

Specified by:

scan in interface org.apache.calcite.schema.ScannableTable