org.apache.calcite.adapter.file

Class FileSchema

java.lang.Object

org.apache.calcite.schema.impl.AbstractSchema

org.apache.calcite.adapter.file.FileSchema

All Implemented Interfaces:

Schema

class FileSchema
extends AbstractSchema

Schema mapped onto a set of URLs / HTML tables. Each table in the schema is an HTML table on a URL.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.schema.impl.AbstractSchema

AbstractSchema.Factory

Nested classes/interfaces inherited from interface org.apache.calcite.schema.Schema

Schema.TableType

Field Summary

Fields

Modifier and Type	Field and Description
private File	baseDirectory
private com.google.common.collect.ImmutableList<Map<String,Object>>	tables

Constructor Summary

Constructors

Constructor and Description
FileSchema(SchemaPlus parentSchema, String name, File baseDirectory, List<Map<String,Object>> tables) Creates an HTML tables schema.

Method Summary

Modifier and Type	Method and Description
private boolean	addTable(com.google.common.collect.ImmutableMap.Builder<String,Table> builder, Map<String,Object> tableDef)
private boolean	addTable(com.google.common.collect.ImmutableMap.Builder<String,Table> builder, Source source, String tableName, Map<String,Object> tableDef)
protected Map<String,Table>	getTableMap()
private static String	trim(String s, String suffix) Looks for a suffix on a string and returns either the string with the suffix removed or the original string.
private static String	trimOrNull(String s, String suffix) Looks for a suffix on a string and returns either the string with the suffix removed or null.

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

getExpression, getFunctionMultimap, getFunctionNames, getFunctions, getSubSchema, getSubSchemaMap, getSubSchemaNames, getTable, getTableNames, isMutable, snapshot

Methods inherited from class java.lang.Object

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

Field Detail

tables

private final com.google.common.collect.ImmutableList<Map<String,Object>> tables

baseDirectory

private final File baseDirectory

Constructor Detail

FileSchema

FileSchema(SchemaPlus parentSchema,
           String name,
           File baseDirectory,
           List<Map<String,Object>> tables)

Creates an HTML tables schema.

Parameters:

parentSchema - Parent schema

name - Schema name

baseDirectory - Base directory to look for relative files, or null

tables - List containing HTML table identifiers

Method Detail

trim

private static String trim(String s,
                           String suffix)

Looks for a suffix on a string and returns either the string with the suffix removed or the original string.

trimOrNull

private static String trimOrNull(String s,
                                 String suffix)

Looks for a suffix on a string and returns either the string with the suffix removed or null.

getTableMap

protected Map<String,Table> getTableMap()

Overrides:

getTableMap in class AbstractSchema

addTable

private boolean addTable(com.google.common.collect.ImmutableMap.Builder<String,Table> builder,
                         Map<String,Object> tableDef)
                  throws MalformedURLException

Throws:

MalformedURLException

addTable

private boolean addTable(com.google.common.collect.ImmutableMap.Builder<String,Table> builder,
                         Source source,
                         String tableName,
                         Map<String,Object> tableDef)