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neo4j-etl.html
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<title>neo4j-etl Command Line Tool</title>
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<div id="content">
<div class="sect1">
<h2 id="neo4j-etl-cli">neo4j-etl Command Line Tool</h2>
<div class="sectionbody">
<div class="paragraph">
<p>This is the command-line tool you use to retrieve and map the metadata from your relational database and drive the export from the relational and import into Neo4j database.</p>
</div>
<div class="paragraph">
<p>With the graphical user interface you can preview the resulting graph data model and eventually adapt it by changing labels, property names, relationship-types and property types.</p>
</div>
<div class="paragraph">
<p>It supports all relational databases with a JDBC driver, like <strong>MySQL</strong>, <strong>PostgreSQL</strong>, <strong>Oracle</strong> and <strong>Microsoft SQL</strong>.</p>
</div>
<div class="paragraph">
<p>You can get the <a href="http://github.com/neo4j-contrib/neo4j-etl/releases/latest">latest version of the import tool from GitHub</a>.</p>
</div>
<div class="paragraph">
<p>Once downloaded and uncompressed the operating system specific <code>zip</code> / <code>tar.gz</code>, you also need download the proper JDBC Driver and add it to the <code>lib</code> folder.</p>
</div>
<div class="paragraph">
<p>You can follow the proper link in the below table in order to download the proper driver jar</p>
</div>
<table class="tableblock frame-all grid-all stretch">
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<col style="width: 50%;">
<col style="width: 50%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Vendor</th>
<th class="tableblock halign-left valign-top">JDBC Driver URL</th>
</tr>
</thead>
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<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="https://www.mysql.com/">MySql</a></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="http://dev.mysql.com/downloads/connector/j/" class="bare">http://dev.mysql.com/downloads/connector/j/</a></p></td>
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<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="http://www.postgresql.com/">PostgreSql</a></p></td>
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<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="https://www.oracle.com/">Oracle</a></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="http://www.oracle.com/technetwork/database/features/jdbc/default-2280470.html" class="bare">http://www.oracle.com/technetwork/database/features/jdbc/default-2280470.html</a></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="https://www.microsoft.com/en-us/sql-server/">Microsoft SQL Server</a></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="https://www.microsoft.com/en-us/download/details.aspx?id=55539" class="bare">https://www.microsoft.com/en-us/download/details.aspx?id=55539</a></p></td>
</tr>
</tbody>
</table>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<div class="title">Note</div>
</td>
<td class="content">
For very large databases make sure to have enough disk-space for the CSV export and the Neo4j datastore and enough RAM and CPUs to finish the import quickly.
</td>
</tr>
</table>
</div>
<div class="sect2">
<h3 id="_available_commands">Available commands</h3>
</div>
<div class="sect2">
<h3 id="_generate_metadata_mapping_command">'generate-metadata-mapping' command</h3>
<div class="listingblock">
<div class="content">
<pre>NAME
neo4j-etl generate-metadata-mapping - Create RDBMS to Neo4j metadata
mapping Json.
SYNOPSIS
neo4j-etl generate-metadata-mapping
[ {--columns | --cols} <Columns>... ]
[ --config-file <Configuration File> ]
[ {-d | --database} <RDBMS database> ] [ --debug ]
[ --delimiter <delimiter> ] [ {--driver | --jars} <--driver <PATH_TO_YOUR_JAR1> --driver <PATH_TO_YOUR_JAR2>>... ]
[ {--exclusion-mode | --exc} <Tables: exclude|include|none(default)> ]
[ {--exclusion-mode-column-type | --exctype} <exclude|include|none(default)> ]
[ {--exclusion-mode-columns | --excc} <exclude|include|none(default)> ]
[ {--exclusion-mode-tables | --exct} <exclude|include|none(default)> ]
[ --options-file <option file> ] [ --output-mapping-file <file|stdout> ]
[ {-p | --port} <RDBMS port> ] [ --quote <quote> ]
[ {--rdbms:fetch-size | --fs} <fetch-size> ]
[ {--rdbms:password | --password} <RDBMS password> ]
[ {--rdbms:schema | -s | --schema} <schema> ]
[ {--rdbms:url | --url} <RDBMS url> ]
[ {--rdbms:user | -u | --user} <RDBMS user> ]
[ {--relationship-name | --rel-name} <table(default)|column> ]
[ --schemas <Schemas>... ] [ {--tables | --tabs} <Tables>... ]
[ --tiny-int <byte(default)|boolean> ] [ --types <Types>... ] [--] [ <table1 table2 ...>... ]
OPTIONS
--columns <Columns>, --cols <Columns>
Lists all columns to include/exclude by name or pattern
Use '-r' <PATTERN> to filter by regex, ex. '-r .*\.orders\..*_id' or
'northwind\.orders\..*_id' ,
'-g' <PATTERN> for grep syntax, ex. '-g .*\.orders\..*_id' or
'northwind\.orders\..*_id' ,
or '-l' <LIST> to list all columns names ex. '-l
northwind.customers.id,northwind.purchase.id,northwind.orders.id'
--config-file <Configuration File>
Specify the path to a file containing the configuration for the
selected command
-d <RDBMS database>, --database <RDBMS database>
RDBMS database.
This option is required if any of the following options are
specified: host
--debug
Print detailed diagnostic output.
--delimiter <delimiter>
Delimiter to separate fields in CSV.
--driver <--driver <PATH_TO_YOUR_JAR1> --driver <PATH_TO_YOUR_JAR2>>, --jars <--driver <PATH_TO_YOUR_JAR1> --driver <PATH_TO_YOUR_JAR2>>
List of additional drivers as a list
--exclusion-mode <Tables: exclude|include|none(default)>, --exc <Tables: exclude|include|none(default)>
Specifies how to handle table exclusion. Options are mutually
exclusive.
exclude: Excludes specified tables from the process. All other
tables will be included.
include: Includes specified tables only. All other tables will be
excluded.
none: All tables are included in the process.
--exclusion-mode-column-type <exclude|include|none(default)>, --exctype
<exclude|include|none(default)>
Specifies how to handle column type exclusion. Options are mutually
exclusive.
exclude: Excludes specified columns types from the process. All
other columns types will be included.
include: Includes specified columns types only. All other columns
types will be excluded.
none: All columns types are included in the process.
--exclusion-mode-columns <exclude|include|none(default)>, --excc
<exclude|include|none(default)>
Specifies how to handle column exclusion. Options are mutually
exclusive.
exclude: Excludes specified columns from the process. All other
columns will be included.
include: Includes specified columns only. All other columns will be
excluded.
none: All columns are included in the process.
--exclusion-mode-tables <exclude|include|none(default)>, --exct
<exclude|include|none(default)>
Specifies how to handle table exclusion. Options are mutually
exclusive.
exclude: Excludes specified tables from the process. All other
tables will be included.
include: Includes specified tables only. All other tables will be
excluded.
none: All tables are included in the process.
--options-file <option file>
Path to file containing Neo4j import tool options.
--output-mapping-file <file|stdout>
Path to the output metadata mapping file.
-p <RDBMS port>, --port <RDBMS port>
Port number to use for connection to RDBMS.
--quote <quote>
Character to treat as quotation character for values in CSV data.
--rdbms:fetch-size <fetch-size>, --fs <fetch-size>
RDBMS Fetch size
--rdbms:password <RDBMS password>, --password <RDBMS password>
Password for login to RDBMS.
This option is required if any of the following options are
specified: --rdbms:url, --url
--rdbms:schema <schema>, -s <schema>, --schema <schema>
RDBMS schema.
--rdbms:url <RDBMS url>, --url <RDBMS url>
Url to use for connection to RDBMS.
--rdbms:user <RDBMS user>, -u <RDBMS user>, --user <RDBMS user>
User for login to RDBMS.
This option is required if any of the following options are
specified: --rdbms:url, --url
--relationship-name <table(default)|column>, --rel-name
<table(default)|column>
Specifies whether to get the name for relationships from table names
or column names.
--schemas <Schemas>
Lists all schemas to include by name or pattern.
Use '-r' <PATTERN> to filter by regex, ex. '-r .*\.north.*',
'-g' <PATTERN> for grep syntax, ex. '-g .*\.north.*' ,
or '-l' <LIST> to list all schemas names ex. '-l northwind,exc'
--tables <Tables>, --tabs <Tables>
Lists all tables to include/exclude by name or pattern.
Use '-r' <PATTERN> to filter by regex, ex. '-r .*\.purchase.*' or
'northwind.purchase.*' ,
'-g' <PATTERN> for grep syntax, ex. '-g .*\.purchase.*' or
'northwind.purchase.*' ,
or '-l' <LIST> to list all tables names ex. '-l
customers,purchase,orders'
--tiny-int <byte(default)|boolean>
Specifies whether to convert TinyInt to byte or boolean
--types <Types>
Lists all column types to include/exclude by name separated by
commas. Valid values:
unknown,
binary,
bit,
character,
id,
integer,
real,
reference,
temporal,
url,
xml,
large_object,
object;
--
This option can be used to separate command-line options from the
list of arguments (useful when arguments might be mistaken for
command-line options)
<table1 table2 ...>
Tables to be excluded/included</pre>
</div>
</div>
</div>
<div class="sect2">
<h3 id="_export_command">'export' command</h3>
<div class="listingblock">
<div class="content">
<pre>NAME
neo4j-etl export - Export from RDBMS and import into NEO4J via CSV
files.
SYNOPSIS
neo4j-etl export [ {--columns | --cols} <Columns>... ]
[ --config-file <Configuration File> ]
[ --csv-directory <csv directory> ]
[ {-d | --database} <RDBMS database> ] [ --debug ]
[ --delimiter <delimiter> ] [ --destination <directory> ] [ {--driver | --jars} <--driver <PATH_TO_YOUR_JAR1> --driver <PATH_TO_YOUR_JAR2>>... ]
[ {--exclusion-mode | --exc} <Tables: exclude|include|none(default)> ]
[ {--exclusion-mode-column-type | --exctype} <exclude|include|none(default)> ]
[ {--exclusion-mode-columns | --excc} <exclude|include|none(default)> ]
[ {--exclusion-mode-tables | --exct} <exclude|include|none(default)> ]
[ --force ] [ --import-tool <import tool path> ]
[ --mapping-file <file|stdin> ] [ {--neo4j:password | --graph:password | --graph:neo4j:password} <neo4j password> ]
[ {--neo4j:url | --graph:url | --graph:neo4j:url} <neo4j url> ]
[ {--neo4j:user | --graph:user | --graph:neo4j:user} <neo4j user> ]
[ --options-file <option file> ] [ --output-mapping-file <file|stdout> ]
[ {-p | --port} <RDBMS port> ] [ --quote <quote> ]
[ {--rdbms:fetch-size | --fs} <fetch-size> ]
[ {--rdbms:password | --password} <RDBMS password> ]
[ {--rdbms:schema | -s | --schema} <schema> ]
[ {--rdbms:url | --url} <RDBMS url> ]
[ {--rdbms:user | -u | --user} <RDBMS user> ]
[ {--relationship-name | --rel-name} <table(default)|column> ]
[ --schemas <Schemas>... ] [ {--tables | --tabs} <Tables>... ]
[ --tiny-int <byte(default)|boolean> ] [ --types <Types>... ]
[ --using <import tool> ] [--] [ <table1 table2 ...>... ]
OPTIONS
--columns <Columns>, --cols <Columns>
Lists all columns to include/exclude by name or pattern
Use '-r' <PATTERN> to filter by regex, ex. '-r .*\.orders\..*_id' or
'northwind\.orders\..*_id' ,
'-g' <PATTERN> for grep syntax, ex. '-g .*\.orders\..*_id' or
'northwind\.orders\..*_id' ,
or '-l' <LIST> to list all columns names ex. '-l
northwind.customers.id,northwind.purchase.id,northwind.orders.id'
--config-file <Configuration File>
Specify the path to a file containing the configuration for the
selected command
--csv-directory <csv directory>
Path to directory for intermediate CSV files.
-d <RDBMS database>, --database <RDBMS database>
RDBMS database.
This option is required if any of the following options are
specified: host
--debug
Print detailed diagnostic output.
--delimiter <delimiter>
Delimiter to separate fields in CSV.
--destination <directory>
Path to destination store directory.
--driver <--driver <PATH_TO_YOUR_JAR1> --driver <PATH_TO_YOUR_JAR2>>, --jars <--driver <PATH_TO_YOUR_JAR1> --driver <PATH_TO_YOUR_JAR2>>
List of additional drivers as a list
--exclusion-mode <Tables: exclude|include|none(default)>, --exc <Tables: exclude|include|none(default)>
Specifies how to handle table exclusion. Options are mutually
exclusive.
exclude: Excludes specified tables from the process. All other
tables will be included.
include: Includes specified tables only. All other tables will be
excluded.
none: All tables are included in the process.
--exclusion-mode-column-type <exclude|include|none(default)>, --exctype
<exclude|include|none(default)>
Specifies how to handle column type exclusion. Options are mutually
exclusive.
exclude: Excludes specified columns types from the process. All
other columns types will be included.
include: Includes specified columns types only. All other columns
types will be excluded.
none: All columns types are included in the process.
--exclusion-mode-columns <exclude|include|none(default)>, --excc
<exclude|include|none(default)>
Specifies how to handle column exclusion. Options are mutually
exclusive.
exclude: Excludes specified columns from the process. All other
columns will be included.
include: Includes specified columns only. All other columns will be
excluded.
none: All columns are included in the process.
--exclusion-mode-tables <exclude|include|none(default)>, --exct
<exclude|include|none(default)>
Specifies how to handle table exclusion. Options are mutually
exclusive.
exclude: Excludes specified tables from the process. All other
tables will be included.
include: Includes specified tables only. All other tables will be
excluded.
none: All tables are included in the process.
--force
Force delete destination store directory if it already exists.
--import-tool <import tool path>
Path to directory containing Neo4j import tool. Mandatory only for Offline Bulk Import mode
--mapping-file <file|stdin>
Path to an existing metadata mapping file. The name 'stdin' will
cause the CSV resources definitions to be read from standard input.
--neo4j:password <neo4j password>, --graph:password <neo4j password>,
--graph:neo4j:password <neo4j password>
Password for login to Neo4j.
--neo4j:url <neo4j url>, --graph:url <neo4j url>, --graph:neo4j:url
<neo4j url>
Url to use for connection to Neo4j.
--neo4j:user <neo4j user>, --graph:user <neo4j user>, --graph:neo4j:user
<neo4j user>
User for login to Neo4j.
--options-file <option file>
Path to file containing Neo4j import tool options.
--output-mapping-file <file|stdout>
Path to the output metadata mapping file.
-p <RDBMS port>, --port <RDBMS port>
Port number to use for connection to RDBMS.
--quote <quote>
Character to treat as quotation character for values in CSV data.
--rdbms:fetch-size <fetch-size>, --fs <fetch-size>
RDBMS Fetch size
--rdbms:password <RDBMS password>, --password <RDBMS password>
Password for login to RDBMS.
This option is required if any of the following options are
specified: --rdbms:url, --url
--rdbms:schema <schema>, -s <schema>, --schema <schema>
RDBMS schema.
--rdbms:url <RDBMS url>, --url <RDBMS url>
Url to use for connection to RDBMS.
--rdbms:user <RDBMS user>, -u <RDBMS user>, --user <RDBMS user>
User for login to RDBMS.
This option is required if any of the following options are
specified: --rdbms:url, --url
--relationship-name <table(default)|column>, --rel-name
<table(default)|column>
Specifies whether to get the name for relationships from table names
or column names.
--schemas <Schemas>
Lists all schemas to include by name or pattern.
Use '-r' <PATTERN> to filter by regex, ex. '-r .*\.north.*',
'-g' <PATTERN> for grep syntax, ex. '-g .*\.north.*' ,
or '-l' <LIST> to list all schemas names ex. '-l northwind,exc'
--tables <Tables>, --tabs <Tables>
Lists all tables to include/exclude by name or pattern.
Use '-r' <PATTERN> to filter by regex, ex. '-r .*\.purchase.*' or
'northwind.purchase.*' ,
'-g' <PATTERN> for grep syntax, ex. '-g .*\.purchase.*' or
'northwind.purchase.*' ,
or '-l' <LIST> to list all tables names ex. '-l
customers,purchase,orders'
--tiny-int <byte(default)|boolean>
Specifies whether to convert TinyInt to byte or boolean
--types <Types>
Lists all column types to include/exclude by name separated by
commas. Valid values:
unknown,
binary,
bit,
character,
id,
integer,
real,
reference,
temporal,
url,
xml,
large_object,
object;
--using <import tool>
Import tool that will be used to load data into neo4j.
--
This option can be used to separate command-line options from the
list of arguments (useful when arguments might be mistaken for
command-line options)
<table1 table2 ...>
Tables to be excluded/included</pre>
</div>
</div>
</div>
<div class="sect2">
<h3 id="_parameters_usage">Parameters Usage</h3>
<div class="listingblock">
<div class="content">
<pre>There are two ways for write Etl parameters:
1) write parameters in command line:
$NEO4J_HOME/bin/neo4j-etl export|generate-metadata-mapping
--rdbms:url jdbc:oracle:thin:@localhost:49161:XE
--rdbms:user northwind --rdbms :password northwind
--rdbms:schema northwind
--using bulk:neo4j-import
--import-tool $NEO4J_HOME/bin
--csv-directory /tmp/northwind
--options-file /tmp/northwind/options.json
--quote '"' --force
...
2) use a config file:
$NEO4J_HOME/bin/neo4j-etl export|generate-metadata-mapping \
--config-file <path to .config file>
Above there is an Example of config file.
#EXAMPLE - ETL CONFIG FILE
#RDBMS
rdbms-url=url
rdbms-schema=schema
rdbms-password=neo4j
rdbms-user=neo4j
rdbms-fetch-size=10000
#NEO4J
using=cypher:direct
neo4j-url=bolt://127.0.0.1:7687
neo4j-user=neo4j
neo4j-password=neo4j
#RULES
exclusion-mode-tables=INCLUDE
tables=-l table1,table2,...
exclusion-mode-columns=INCLUDE
columns=-l column1,column2,...
exclusion-mode-column-types=EXCLUDE
column-types=type1,type2,...
#MISC
output-mapping-file=path_to_output_mapping_file
import-tool=path_to_import_tool
csv-directory=path_to_directory
mapping-file=path_to_file
debug=false</pre>
</div>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_example_session_basic">Example Session: Basic</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_generate_metadata_mapping">Generate Metadata Mapping</h3>
<div class="listingblock">
<div class="content">
<pre>export NEO4J_HOME=/path/to/neo4j-enterprise-3.4.0
mkdir -p /tmp/northwind
$NEO4J_HOME/bin/neo4j-etl generate-metadata-mapping \
--rdbms:url jdbc:oracle:thin:@localhost:49161:XE \
--rdbms:user northwind --rdbms:password northwind \
--rdbms:schema northwind --output-mapping-file /tmp/northwind/mapping.json</pre>
</div>
</div>
<div class="sect3">
<h4 id="_multi_database_support">Multi Database Support</h4>
<div class="paragraph">
<p>Neo4j 4.0 Enterprise has <a href="https://neo4j.com/docs/operations-manual/4.0/manage-databases/">multi-tenancy support</a>,
in order to support this feature we added a select options box in the import view as it follows:</p>
</div>
<div class="imageblock">
<div class="content">
<img src="img/etl.gif" alt="etl">
</div>
</div>
<div class="paragraph">
<p>If you use the command line tool you can specify the destination database by passing
the <code>--neo4j:database-name</code> option in this way:</p>
</div>
<div class="listingblock">
<div class="content">