Posts (page 87)
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6 min readTo get the value of a JSON property in Elixir, you can use the Jason.decode!/1 function from the Jason library to parse the JSON string into an Elixir map. Once you have the JSON parsed into a map, you can access the value of a specific property by using the key of the property as a key to access the value in the map. For example, if you have a JSON object json containing a property named name, you can get the value of the name property by accessing json["name"].
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5 min readTo write parameterized queries in Solr, you can use the Solr query syntax along with parameters. Parameters can be used to dynamically modify the query based on user input or other requirements.To use parameters in a Solr query, you can specify them using the "$" symbol followed by the parameter name. For example, if you have a parameter called "q", you can use it in the query as "$q".
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5 min readTo have the latest version of Elixir on Windows, you can download and install the Elixir installer from the official website elixir-lang.org. The installer will guide you through the installation process and automatically update your Elixir to the latest version. Additionally, you can also use tools like Chocolatey or Scoop to manage your Elixir installation and easily update to the latest version.
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6 min readTo implement Solr spell checker for compound words, you can follow these steps:Enable the SpellCheckComponent in your Solr configuration file by adding the following lines: truedefaulttruefalse5Define a custom spellcheck dictionary that includes compound words. You can do this by creating a text file with the compound words and their corrections, then adding it to the Solr configuration. Index your data with the compound words included, so that Solr can generate suggestions for them.
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6 min readIn Elixir, you can run an infinite job or process by using a recursive function that calls itself indefinitely. You can achieve this by defining a function that performs the desired operations and then calls itself at the end to loop continuously. Make sure to include a condition that stops the recursion when needed to prevent the process from running indefinitely. This can be done by adding a base case or a termination condition within the function.
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5 min readTo retrieve a paragraph search response from Solr, you can use the "hl" (highlighting) component in your query parameters. This component is used to specify the fields that you want to highlight in the search results. When highlighted fields are matched in the search results, Solr will return the relevant portion of the text (the paragraph) that contains the search terms.
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8 min readTo create a periodical timer in Elixir, you can utilize the Process.send_after/4 function in combination with a recursive function.First, define a function that will perform the desired action periodically. This function can use Process.send_after/4 to send a message to itself after a specified time interval. In the function, after performing the action, call the function recursively with the appropriate time interval.
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8 min readTo create a relevant autocomplete in Solr, you need to start by configuring the autocomplete feature in your Solr schema. This involves defining a field for the autocomplete data and setting up the appropriate analyzers and tokenizers to enhance relevancy.Next, you will need to populate the autocomplete field with relevant data from your Solr index. This could include terms from various fields in your documents or specific terms that users commonly search for.
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5 min readIn Elixir, you can find default user directories by using the System.user_home/0 function. This function returns the path to the current user's home directory. Additionally, you can use the System.user_data_dir/1 function to get the path to the user's data directory, and the System.user_cache_dir/1 function to get the path to the user's cache directory. These functions provide a convenient way to access default user directories in Elixir for reading and writing files.
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7 min readTo speed up multiple filter queries in Apache Solr, there are a few strategies you can use. One approach is to optimize your index by using appropriate field types and configuring them with the correct parameters. This can help improve the performance of filter queries. Additionally, you can consider using the filter cache feature in Solr, which stores the results of filter queries in memory for faster retrieval.
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8 min readIn Elixir, you can list the callers of a function by using the :erlang.process_info/1 function and the :current_stacktrace option. This will give you a list of information about the process, including the function calls that led to the current state. By filtering this information, you can identify the callers of a specific function. This can be useful for debugging and understanding the flow of the program.
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6 min readTo debug Solr indexing, you can start by checking if the data is being properly sent to Solr for indexing. Review the indexing configuration and make sure that the fields and data types are properly defined.You can also check the Solr logs for any errors or warnings related to indexing. Look for any exceptions or stack traces that may indicate issues with the indexing process.