Elasticsearch Query Parser Java

Content using the idiographic whitespace as a separator can be found without using it. This query finds documents which are similar to the specified text, document, or collection of documents. NOTE: this configuration was tested with Logstash 2. Alternatively, it can also be used for performing the search for similar words based on Levenshtein Edit Distance, which can be defined as the minimum number of single-character edits (insertions, deletions or substitutions) required to change one word into the other. For building the query, we can use the Elasticsearch Java API. Also see Query by language using a Range, below, for how to query a range of values. For Elasticsearch 5. Command-line argument parsing. I use elastic from one of my lift apps, but I don't use the java client, I use twitter Finagle to query ES. Elasticsearch is taking the full-text search world by storm by combining an easy-to-use REST API with automated cluster scaling. Solr makes it easy to run a full-featured search server. So if we don't add fields parameter to the request query, Elasticsearch will automatically attempt to determine the existing fields in the index's mapping that are queryable, and perform the search on those fields. NET data access to create data-driven WinForms and ASP. y) of the library. Called when parser parses an input term token that uses prefix notation; that is, contains a single '*' wildcard character as its last character. Here we explain how to send logs to ElasticSearch using Beats (aka File Beats) and Logstash. A query that parses a query string and runs it. This is something I wanted to write down for years but never got down to completing the post. We did not test the performance using a very large JSON file. The Open Source label was born in February 1998 as a new way to popularise free software for business adoption. ajax method (making it fully customizable). It is open-source and built in Java, which means you can run ElasticSearch on any. The default tokenizer splits the string by. x but you have to use a matching major version: For Elasticsearch 6. type ] [elastic1001] [zhwiki_content_1415377727][0], node[OuuilxJ-SKGpToIE1xqiGA], [R], s[STARTED]: Failed to execute. GitHub Gist: instantly share code, notes, and snippets. If you are a web developer or a user who wants to learn more about Elasticsearch, then this is the book for you. The approach chosen for Java 13 is not even particularly feature-rich. To keep the example simple, we will use Kibana that is integrated in LogStash. Javascript Madness Intro. October 27, 2018 Java Leave a comment. Can anyone guide me in how to do that? any help would be appreciated. If the prepackaged algorithms aren't working for you, you can either write a script query, which dynamically scores documents according to whatever code you like, or even write a Java plugin implementing your own scoring algorithm. elasticsearch. You can read the file entirely in an in-memory data structure (a tree model), which allows for easy random access to all…. JAXP is a standard part of Java 1. USE_DECLARED_QUERY tries to find a declared query and throws an exception if cannot find one. Elasticsearch is a standalone database server, written in Java. GitHub Gist: instantly share code, notes, and snippets. Defaults to *. Reading a password from a file for authentication purpose Java. A query string query is an advanced query with a lot of different options that ElasticSearch will parse and transform into a tree of simpler queries. This talk explores the area of real-time full text search, using Elasticsearch, an open-source, distributed search engine built on top of Apache Lucene. Spencer Uresk is a software architect who works with Java, Spark, Hadoop, and Elasticsearch. " The Java REST client internally uses Apache HTTP Async Client to send HTTP requests. elasticsearch. Created: 2016-09-08 Thu 10:35. The structure of a dashboard can also be saved in elasticsearch. * @param likeTexts the text to use when generating the 'More Like This' query. performFirstPhase(TransportSearchTypeAction. These source code samples are taken from different open source projects. ElasticSearch Custom Scoring – Decay Function From the elasticsearch function score tutorial , I copied the example for decay function and tried to execute it. To shutdown Elasticsearch, from the terminal where you launched elasticsearch, hit Ctrl+C. Now updated for Lucene 5. The parsing I did in Java, and the actual query builder UI is in HTML and Javascript. This Metasploit module exploits a remote command execution vulnerability in ElasticSearch, exploitable by default on ElasticSearch prior to 1. Twenty Years of OSI Stewardship Keynotes keynote. 7 you could use Guava, but you can keep the current way if you can't upgrade. This chapter includes examples of how to send signed HTTP requests to Amazon Elasticsearch Service using Elasticsearch clients and other common libraries. Using aggregations on my audit data gives me insight who used my Elasticsearch cluster at what time. I am using python-elasticsearch client - elasticsearch. It provides a distributed, multitenant-capable full-text search engine with a RESTful web interface and schema-free JSON documents. The URL class provides several methods that let you query URL objects. From the community for the community | | |. Parsing Google pages using RegularExpressions in C#. Elastic Search team provides client APIs to communicate with the elastic search for Java, C#. defaultField(String) set. The Elasticsearch Java API lets you get at aggregations in a similar way to using HTTP requests. It's core Search Functionality is built using Apache Lucene, but supports many other features. Is there a utility that can convert lucene query string format to ES Java API format? We are planning to use lucene query parser to validate query string entered by. Here is an example terms aggregation:. The simple_query_string query is a version of the query_string query that is more suitable for use in a single search box that is exposed to users because it replaces the use of AND/OR/NOT with +/|/-, respectively, and it discards invalid parts of a query instead of throwing an exception if a user makes a mistake. Search API: Understanding and Using. Below is the translation of the above SQL statements to equivalent ElasticSearch query, in the following example we use curl, and we want to get a max of 100 records in each query from start, i. October 27, 2018 Java Leave a comment. JSON data maps easily to data structures in most of the modern programming languages. M2 or higher, the StorageHandler has changed (from ESStorageHandler to EsStorageHandler). Our culture is transparency and honesty, we always like to explain in detail how our engine is working. NET, Python etc… In this article, we will discuss the Java client of Elastic Search and GSON library for JSON streaming API. ) and the queries, we created a JMeter environment. Lucene Query Syntax. Elasticsearch is built on Apache Lucene so we can now expose very similar features, making most of this reference documentation a valid guide to both approaches. 7 you could use Guava, but you can keep the current way if you can't upgrade. At Twitter, we use it exclusively for query parsing in Twitter search. To consider whether Vespa is a better choice for your use case, take a look at this comparison. Elasticsearch is a distributed full-text NoSQL (data is stored in JSON format) search engine based on Apache Lucene and written in Java. 2 on logs generated by Elasticsearch 2. This Metasploit module exploits a remote command execution vulnerability in ElasticSearch, exploitable by default on ElasticSearch prior to 1. With the introduction of Java destination in syslog-ng two years ago, the official Elasticsearch destination driver was also released by the syslog-ng team, developed in Java. Remember, you need a Statement in order to execute either a query or an update. Navigate to the search page; Add the Custom Filter widget with the following:. It also splits the query string into a human readable format and takes of decoding the parameters. Execute Raw Elasticsearch Query using Transport Client - Java API Leave a reply The following sample program details on how to execute raw Elasticsearch query using Transport Client (Java API). Includes a GUI for creating and editing queries. Because Spring Boot can handle the parse of configuration files, when we want to implement a project which uses yml. I've changed this to use a post_filter that temporary will fix the problem but this should be changed with normal query filter in order to have Elasticsearch cache working. Source Code. The usual Lucene query syntax is available either through the JSON query language, or through the query parser. Search for phrase "foo bar" in the title field. I have the table (MySQL) “code” which has a field “code_group_id” and existing data in the table. ElasticSearch was born in the age of REST APIs. The search has to work as fast as possible, serving each search request without slowing down the execution of the other ones. These examples are extracted from open source projects. QueryShardException. These code samples are for interacting with the Elasticsearch APIs, such as _index , _bulk. Logstash failed to parse source s[STARTED]: Failed to execute [org. The query DSL features a long list of different types of queries that we can use. ElasticSearch Java APIs can be used to create, update, query (retrieve items) and delete the index. Working with Elasticsearch in Java. e scheme, protocol, username, password, hostname, port, domain, subdomain, tld, path, query string, hash, etc. You can find the full source code for the example in my git repository at:. Query Elasticsearch Data from Node. Query clauses behave differently depending on whether they are used in query context or filter context. Learn how to use java api org. But there are many HTML pages that consist of both HTML and JavaScript. At Twitter, we use it exclusively for query parsing in Twitter search. Make JDOM 2. If I jump to ElasticHQ's Query put in the java:125) at org. Using the interface you can create lots of different charts presenting data coming out of elasticsearch. x versions are a significant reworking of the JDOM API to enhance it with Generics, and other Java Language features introduced with Java 5. title:"foo bar". Add below dependencies in your project. Lucene Query Builder. The documents are given some IDs. Purpose: Elasticsearch provides a Java API and it executes all operations in an asynchronous manner using the client object. He has also built a proprietary software for consultancy firms. A separate. NOTE: this configuration was tested with Logstash 2. In summary, the twitter-search-query-parser is: a Parsing Expression Grammar — a set of rules for recognising strings — describing the grammar of a Twitter search query; a parser that can turn a search query string into an AST; AST node types that define reduction, stringification and simplification for the rules of the grammar. Tools used in this article : Spring Boot 1. When elasticsearch sees the idiographic space within a standard query it looks to treat it as simple whitespace. It also splits the query string into a human readable format and takes of decoding the parameters. java: Parser class contains three parsing methods: parseExp(), parseTerm(), and parseFactor. When parser sees a character "\" in the String it assumes that this is escape character and next character should be control character which in your case it is not. Java Query String Parser. Hibernate introduced a similar feature in version 5. 0 and later, use the major version 6 (6. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. xml of our zipkin service. Option 1:- get a clean result from elasticsearch DB, so i need to modify the search query. Using Typescript and Java I would like to retrieve a List of Code objects with a specific code_group_id. This java examples will help you to understand the usage of org. In order to call this endpoint from your Java client code, you need to include the reindex module in your pom. [email protected]] Parse Failure [Failed to parse source. x is fully supported for use with Java 6 or Java 7, and is also compatible with Java 5 with a few restrictions. ElasticSearch Interview Questions ElasticSearch Interview Questions And Answers. The QueryParser class also generates BooleanQuery objects via its parse() method when the search text passed to parse() is formatted to generate a BooleanQuery. You can read the file entirely in an in-memory data structure (a tree model), which allows for easy random access to all…. A browser like Firefox first parses the HTML into a Document Object Model (DOM), and then JavaScript in the page is executed, potentially changing the DOM. Is there a utility that can convert lucene query string format to ES Java API format? We are planning to use lucene query parser to validate query string entered by. Elasticsearch is a distributed full-text NoSQL (data is stored in JSON format) search engine based on Apache Lucene and written in Java. “jParse is a jQuery plugin that allows you to parse XML that was fetched with the jQuery. Using aggregations on my audit data gives me insight who used my Elasticsearch cluster at what time. JPQL can be used for reading (SELECT), as well as bulk updates (UPDATE) and deletes (DELETE). Body-parser: This library works with Express to parse body requests. Parsing Google pages using RegularExpressions in C#. Parse JSON using Ruby. I am little bit confused while creating Filtered query in Elasticsearch Java API. Includes a GUI for creating and editing queries. More powerful and complex queries, including those that involve faceting and statistical operations, should use the full ElasticSearch query language and API. The native Elasticsearch API is Java, so building and executing queries in Java is a very natural thing to do. The Explain API calculates a score "explanation" for the query of a particular document, providing useful feedback on whether or not a document matches a specific query. You can generate a visual graph from query results, showing the network of triples in the query results. java Find file Copy path polyfractal Remove MovingAverage pipeline aggregation ( #39328 ) 6f0f8ab Mar 19, 2019. If your end user is content to have a language as simple as your most typical Google search, then Java's StringTokenizer is more than up to the task for parsing. query for documents that exist. Keep you updated on this one. By Philipp Wagner | May 16, 2016. Lucene Query Builder. Imagine that you have some data in Elasticsearch that you would like to open up in Excel and create pivot tables from the data. Although Lucene provides the ability to create your own queries through its API, it also provides a rich query language through the Query Parser, a lexer which interprets a string into a Lucene Query using JavaCC. This post demonstrates how to translate the Elasticsearch Query DSL into the respective Java Objects of Elastic Java Rest Client. 2 on logs generated by Elasticsearch 2. ElasticSearch fuzzy query can be used in scenarios when the user searches with mistyped keywords or misspellings. Elasticsearch not only stores the document, but also indexes the content of the document in order to make it searchable. Elasticsearch uses Apache Lucene to index documents for fast searching. Security Bulletin: A security vulnerability has been identified in IBM Java Runtime could affect DB2 Query Management Facility (CVE-2018-12547, CVE-2019-2426, CVE-2018-1890, CVE-2018-12549, CVE-2018-11212). Parsing Strings in Java Strings in Java can be parsed using the split method of the String class. Elasticsearch 6. URI may not be the best way to query Elasticsearch. Java Clients for Elasticsearch Transcript 09 Nov 2016. Lucene has a custom query syntax for querying its indexes. If your end user is content to have a language as simple as your most typical Google search, then Java's StringTokenizer is more than up to the task for parsing. We will parse nginx web server logs, as it's one of the easiest use cases. The java api helps sending request and composing them using its own objects. Lucene Query Syntax. By Luke Francl ([email protected] Created: 2016-09-08 Thu 10:35. Can anyone guide me in how to do that? any help would be appreciated. Content using the idiographic whitespace as a separator can be found without using it. To obtain an instance of this class use the following pattern:. We will parse nginx web server logs, as it's one of the easiest use cases. The SQL Query Parser (also referred to as ‘parser’ in this document) is a generated parser. Steps to reproduce. Nodes should be separated by commas e. If you need help setting up, refer to "Provisioning a Qbox Elasticsearch Cluster. In the query language queries are written as a JSON structure and is then sent to the query endpoint (details of the query langague below). org), June 2017. To keep the example simple, we will use Kibana that is integrated in LogStash. When building vertical search engines, for example for collecting recipes, prices or addresses, the first step is to crawl the web for information. As this is a Java-oriented article, we're not going to give a detailed step-by-step tutorial on how to setup Elasticsearch and show how it works under the hood, instead, we're going to target the Java client. October 29, 2019 Mehmet Salih Deveci 0 Comments how to find hard parse sql in oracle, life cycle of sql statement in oracle, Oracle architecture, oracle logical query processing, oracle sql parsing, order of execution of sql query in oracle, parse oracle sql, phases of query processing, query execution steps in oracle, query execution steps in. Alternatively, it can also be used for performing the search for similar words based on Levenshtein Edit Distance, which can be defined as the minimum number of single-character edits (insertions, deletions or substitutions) required to change one word into the other. So, I stepped through the instructions of the documentation, but I still have problems. At the Internet Archive we have thousands of new documents to index every day so the search must continue to work properly in a continuous indexing mode. To obtain an instance of this class use the following pattern:. So if we don’t add fields parameter to the request query, Elasticsearch will automatically attempt to determine the existing fields in the index’s mapping that are queryable, and perform the search on those fields. In the query language queries are written as a JSON structure and is then sent to the query endpoint (details of the query langague below). This Metasploit module exploits a remote command execution vulnerability in ElasticSearch, exploitable by default on ElasticSearch prior to 1. NOTE: this configuration was tested with Logstash 2. In this post, we will setup up a sample Spring boot Elasticsearch application. Get a hands-on introduction to using Elasticsearch from a command shell and from within a Java application. While the Java language is where Painless gets most of its power from, not every class or method from the Java standard library (Java Runtime Environment, JRE) is available. If you love REST APIs, you'll probably feel more at home with ES from the get-go. Sep 19, 2015. We will not use the ElasticSearch that is bundled with LogStash. Search for word "foo" in the title field. A Java JDBC PreparedStatement is a special kind of Java JDBC Statement object with some useful additional features. Master the intricacies of Elasticsearch 7. What is ElasticSearch? ElasticSearch (ES) is a distributed and highly available open-source search engine that is built on top of Apache Lucene. the charts are constructed using the forms provided by Kibana. type ] [elastic1001] [zhwiki_content_1415377727][0], node[OuuilxJ-SKGpToIE1xqiGA], [R], s[STARTED]: Failed to execute. Defaults to *. An "index" is a data structure to allow for ultra-fast data query and retrieval operations in databases. You can use a Java JDBC PreparedStatement instead of a Statement and benefit from the features of the PreparedStatement. General SQL Parser Java Version. We use HTTP requests to talk to ElasticSearch. Hello, I am new to elasticsearch and have been trying to use query parser. Additionally, Elasticsearch supports configurable similarity algorithms, such as the bm25 algorithm. Java Query String Parser. As this is a Java-oriented article, we're not going to give a detailed step-by-step tutorial on how to setup Elasticsearch and show how it works under the hood, instead, we're going to target the Java client, and how to use the main features like index, delete. In this part, we will cover how to generate an Elasticsearch query by extending the code of the first part. :warning: READ THIS SECTION IF IT'S YOUR FIRST POST Some useful links: elasticsearch reference guide elasticsearch user guide elasticsearch plugins elasticsearch clients other documentation READ THIS SECTION IF IT'S YOUR FIRST POST If you have any trouble, please tell us as many information as possible like your technical environment, sizing. Hibernate introduced a similar feature in version 5. The XQuery support in Saxon consists essentially of an XQuery parser (which is itself an extension of the XPath parser); the parser generates the same internal intepretable code as the XSLT processor. These Elasticsearch questions were asked in various interviews by top MNC companies and prepared by industry experts. When elasticsearch sees the idiographic space within a standard query it looks to treat it as simple whitespace. The first version of ElasticSearch was released in February 2010 by Shay Banon. This video will explain you how to perform Query DSL operation using spring data elasticsearch & ELasticSearchTemplate #JavaTechie #SpringDataElasticSearch #. Also see the function_score query. This query finds documents which are similar to the specified text, document, or collection of documents. For traversal, JJTree provides support for the visitor design pattern. I am little bit confused while creating Filtered query in Elasticsearch Java API. In case you transformed those strings to correctly formatted timestamps, the only way you could perform the query you propose is to. this means that Elasticsearch cannot parse the. Java Query String Parser. When building vertical search engines, for example for collecting recipes, prices or addresses, the first step is to crawl the web for information. Rust illuminating the way forward (but actually a Cities Skylines screenshot) Caveat: Elasticsearch is a multi-purpose, distributed, battle-tested, schema-free, log and document storage engine. I am using python-elasticsearch client - elasticsearch. How the General SQL Parser compares to alternatives ABOUT THE GENERAL SQL PARSER General SQL Parser for Java is a Java class library that provides algorithms and components for parsing, analyzing, formatting and modifying SQL query from various database vendors without connecting to a database instance. Lucene Query Syntax. Instead, we will run latest stable version of ElasticSearch. URI may not be the best way to query Elasticsearch. Elasticsearch : Queries Till now we looked into some basic concept of elasticsearch. jQuery How to Read XML. installation npm install dom-parser. We will use latest version of Elasticsearch i. Although manually setting up an Elasticsearch cluster is useful for learning, use of a configuration management tool is highly recommended with any cluster setup. These examples are extracted from open source projects. Elasticsearch Problem Lists(2): With Spring 七月 29, 2017 In last blog, we have introduced some problems about Elasticsearch basic concepts confusions and some config problems we met. According to DB-Engines, Elasticsearch ranks 8th in popularity, trailing after Oracle, MySQL, PostgreSQL and other SQL databases. ElasticSearch Custom Scoring – Decay Function From the elasticsearch function score tutorial , I copied the example for decay function and tried to execute it. Called when parser parses an input term token that uses prefix notation; that is, contains a single '*' wildcard character as its last character. The current onclick/ link function. The focus of this document is on how to use the generated parser. Elasticsearch is best known for its full-text search capabilities but it also features full geospatial support. When using a query string from an external source, eg the keywords field from a web search form, it is important to filter it to avoid these. It seems that everyone that makes one keeps it proprietary (other than Surround). When a query is performed, the words in the query are also analyzed and the tokens are used to lookup the document in the inverted index. Trying a basic query. percolate query This query finds percolator queries based on documents. If the authority component is empty then the user-information, host, and. NOTE: this configuration was tested with Logstash 2. Using Typescript and Java I would like to retrieve a List of Code objects with a specific code_group_id. This Lucene Query Builder demonstrates the basic Lucene query syntax such as AND, OR and NOT, range queries, phrase queries, as well as approximate queries. * @param likeTexts the text to use when generating the 'More Like This' query. 0 server and create indices, insert, delete and query data via the Java API on Windows. ajax method (making it fully customizable). Once we have the AST, we can then generate a search query for Elasticsearch, the search backend we're using. It can also be seen as an updated version of an article with the same name I published in 2014 on the Found blog. Java Clients for Elasticsearch Transcript 09 Nov 2016. When indexing documents in this form, Elasticsearch will not be able to parse those strings as dates correctly. dom-parser. it can parse your data in almost real time to search for the information you need. There are two modes that this operates. A Practical Introduction to Elasticsearch with Kibana. The function is triggered by a HTTP request that uses a query string to specify the ID to look up. Working with Elasticsearch in Java. We will not use the ElasticSearch that is bundled with LogStash. Elasticsearch: Join and SubQuery abstraction. Go through ParserTest. I would recommend to move over to the low level rest client for these cases where json is sent instead. The query DSL is a flexible, expressive search language that Elasticsearch uses to expose most of the power of Lucene through a simple JSON interface. Here are some query examples demonstrating the query syntax. NET, Java and VCL version. Java Clients for Elasticsearch Transcript 09 Nov 2016. Our culture is transparency and honesty, we always like to explain in detail how our engine is working. Completely open source and built with Java, Elasticsearch is categorized as a NoSQL database. Passing an illegal query string to ElasticSearch, the request will fail. In the previous blog post I started writing about using the new Rest based client for java in elasticsearch 5. Elasticsearch 6. If you need help setting up, refer to "Provisioning a Qbox Elasticsearch Cluster. Ask Question Asked 5 years, 1 month ago. Sadly, the elasticsearch JSON parser // is a stream parser so we need to instantiate it, parse the event to // validate it, then instantiate it again to provide the JSON to // elasticsearch. What is Elasticsearch? Elasticsearch is an open source, distributed search and analytics engine, designed for horizontal scalability, reliability, and easy management. It can also be seen as an updated version of an article with the same name I published in 2014 on the Found blog. When indexing documents in this form, Elasticsearch will not be able to parse those strings as dates correctly. Alternatively, it can also be used for performing the search for similar words based on Levenshtein Edit Distance, which can be defined as the minimum number of single-character edits (insertions, deletions or substitutions) required to change one word into the other. GitHub Gist: instantly share code, notes, and snippets. Keyword matching. The setup for…. It is what you should be using to write your queries in production. I do this because there are so many more examples of the json to send to ES than java code, plus, I can do all my testing, initial implementation using curl and then just copy paste the json that I know works. Get all documents from Elasticsearch with. _x000D_ In 2013, he started working on Lucene and Elasticsearch, and in 2016, he authored his first book, Elasticsearch Essentials, which was published by Packt. Overall from working with clients as a Solr/Elasticsearch consultant, I've found that developer preferences tend to end up along language party lines: if you're a Java/c# developer, you'll be pretty happy with Solr. Logging with Logstash, ElasticSearch, Kibana and Redis Elastic Search will allow to query all the data from the logs, parse logs as well as push them into ES. The high-level full text queries are usually used for running full text queries on full text fields like the body of an email. Spencer Uresk is a software architect who works with Java, Spark, Hadoop, and Elasticsearch. I’m learning about elastic search and I am trying to retrieve data based on a field value in the table. A query is made up of two clauses − Elasticsearch supports a large number of queries. java Find file Copy path polyfractal Remove MovingAverage pipeline aggregation ( #39328 ) 6f0f8ab Mar 19, 2019. Creating the Elasticsearch query. However, there is no setFilter method Or some other method which will allow to apply filter before query is executed. Alternative web crawlers or why pick Nutch? The. The structure of a dashboard can also be saved in elasticsearch. elasticsearch. I have a question regarding Zipkin with elasticsearch storage. The focus of this document is on how to use the generated parser. While the Java language is where Painless gets most of its power from, not every class or method from the Java standard library (Java Runtime Environment, JRE) is available. Get all documents from Elasticsearch with. This is a transcript of a talk I gave at the Singapore Java User Group on November 9 2016. We will also perform some actual search queries on sample leads. At the Internet Archive we have thousands of new documents to index every day so the search must continue to work properly in a continuous indexing mode. 3 included some major new features, including rollups and Java 10 support, but one of the most intriguing additions in this version is SQL support. You also need a module that implements some kind of parsing mechanism. the charts are constructed using the forms provided by Kibana. The XQuery processor may be invoked either from the operating system command line, or via an API from a Java application. It is open-source and built in Java, which means you can run ElasticSearch on any. In this article, we'll take a closer look at why query string queries are special and how you can make use of them. elasticsearch. These queries perform basic searches using common ElasticSearch features. x versions are a significant reworking of the JDOM API to enhance it with Generics, and other Java Language features introduced with Java 5. Fluentd is a log management system that is heavily used in the Kubernetes world. A selector is a chain of simple selectors, separated by combinators. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: