org.apache.nifi.reporting.sql.metrics

Class JvmMetricsTable

java.lang.Object

org.apache.calcite.schema.impl.AbstractTable

org.apache.nifi.reporting.sql.metrics.JvmMetricsTable

All Implemented Interfaces:

org.apache.calcite.schema.QueryableTable, org.apache.calcite.schema.Table, org.apache.calcite.schema.TranslatableTable, org.apache.calcite.schema.Wrapper

public class JvmMetricsTable
extends org.apache.calcite.schema.impl.AbstractTable
implements org.apache.calcite.schema.QueryableTable, org.apache.calcite.schema.TranslatableTable

Field Summary

Fields

Modifier and Type	Field and Description
private ReportingContext	context
private Set<JvmMetricsEnumerator>	enumerators
private ComponentLog	logger
private int	maxRecordsRead
private MetricsService	metricsService
private org.apache.calcite.rel.type.RelDataType	relDataType
private org.apache.nifi.metrics.jvm.JvmMetrics	virtualMachineMetrics

Constructor Summary

Constructors

Constructor and Description
JvmMetricsTable(ReportingContext context, ComponentLog logger) Creates a JVM Metrics table.

Method Summary

Modifier and Type	Method and Description
<T> org.apache.calcite.linq4j.Queryable<T>	asQueryable(org.apache.calcite.linq4j.QueryProvider queryProvider, org.apache.calcite.schema.SchemaPlus schema, String tableName)
void	close()
Type	getElementType()
org.apache.calcite.linq4j.tree.Expression	getExpression(org.apache.calcite.schema.SchemaPlus schema, String tableName, Class clazz)
org.apache.calcite.schema.Schema.TableType	getJdbcTableType()
int	getRecordsRead()
org.apache.calcite.rel.type.RelDataType	getRowType(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)
org.apache.calcite.linq4j.Enumerable<Object>	project(int[] fields) Returns an enumerable over a given projection of the fields.
org.apache.calcite.rel.RelNode	toRel(org.apache.calcite.plan.RelOptTable.ToRelContext context, org.apache.calcite.plan.RelOptTable relOptTable)
String	toString()

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, wait, wait, wait

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

getStatistic, isRolledUp, rolledUpColumnValidInsideAgg

Field Detail

logger

private final ComponentLog logger

relDataType

private org.apache.calcite.rel.type.RelDataType relDataType

context

private volatile ReportingContext context

maxRecordsRead

private volatile int maxRecordsRead

metricsService

private volatile MetricsService metricsService

virtualMachineMetrics

private volatile org.apache.nifi.metrics.jvm.JvmMetrics virtualMachineMetrics

enumerators

private final Set<JvmMetricsEnumerator> enumerators

Constructor Detail

JvmMetricsTable

public JvmMetricsTable(ReportingContext context,
                       ComponentLog logger)

Creates a JVM Metrics table.

Method Detail

toString

public String toString()

Overrides:

toString in class Object

close

public void close()

project

public org.apache.calcite.linq4j.Enumerable<Object> project(int[] fields)

Returns an enumerable over a given projection of the fields.

Called from generated code.

getRecordsRead

public int getRecordsRead()

getExpression

public org.apache.calcite.linq4j.tree.Expression getExpression(org.apache.calcite.schema.SchemaPlus schema,
                                                               String tableName,
                                                               Class clazz)

Specified by:

getExpression in interface org.apache.calcite.schema.QueryableTable

getElementType

public Type getElementType()

Specified by:

getElementType in interface org.apache.calcite.schema.QueryableTable

asQueryable

public <T> org.apache.calcite.linq4j.Queryable<T> asQueryable(org.apache.calcite.linq4j.QueryProvider queryProvider,
                                                              org.apache.calcite.schema.SchemaPlus schema,
                                                              String tableName)

Specified by:

asQueryable in interface org.apache.calcite.schema.QueryableTable

toRel

public org.apache.calcite.rel.RelNode toRel(org.apache.calcite.plan.RelOptTable.ToRelContext context,
                                            org.apache.calcite.plan.RelOptTable relOptTable)

Specified by:

toRel in interface org.apache.calcite.schema.TranslatableTable

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