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8 min readTo index a JSON file with nested arrays in Solr, you need to define a schema that can effectively represent the nested structure of the JSON data. This involves creating fields in the schema that can store the nested arrays as well as defining suitable field types for these fields.Once you have defined your schema, you can use Solr's DataImportHandler to import the JSON data into your Solr instance.
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6 min readTo connect to a Solr node using Scala, you can use the SolrJ library which provides a Java client for interacting with Solr. You can add the SolrJ dependency to your Scala project using either Maven or SBT.Once you have added the SolrJ dependency, you can create a SolrClient object in your Scala code to connect to the Solr node. You will need to specify the URL of the Solr server when creating the SolrClient object.
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5 min readTo index existing documents in Java with Solr, you can use the SolrJ library which provides APIs for interacting with Solr. First, you need to create a SolrClient object by providing the URL of your Solr server. Next, you can create a SolrInputDocument object for each document that you want to index. You can set the fields of the document using the setField() method. After creating the document objects, you can add them to Solr using the add() method of the SolrClient object.
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6 min readTo search in XML using Solr, you first need to index the XML data in Solr. This involves converting the XML data into a format that Solr can understand, such as JSON or CSV, and then using the Solr API to upload the data into a Solr index.Once the XML data is indexed in Solr, you can perform searches using the Solr query syntax. This syntax allows you to search for specific keywords or phrases within the XML data, as well as to apply filters and sorting to the search results.
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6 min readSolr uses a number of techniques to index files, including tokenization, text analysis, and document parsing.Tokenization is the process of breaking a document down into individual words or terms, which are then stored in the index. The text analysis process involves applying various filters and analyzers to the tokens to normalize them and improve search results.
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5 min readTo match 1000gm to 1kg in Solr, you can create a conversion factor in your data processing pipeline that converts grams to kilograms. This can be achieved by either multiplying the gram value by 0.001 or dividing by 1000. Once the conversion is done, you can then index the data in Solr with the appropriate unit (grams or kilograms) so that searches for 1kg would also return results for 1000gm.
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5 min readIn Solr, reducing the length of a multivalued field can be achieved by using the CopyField feature to create a new field with a limited length.First, create a new field in the schema.xml file with the desired maximum length. Then, use the CopyField command to copy the multivalued field values to the new field.
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7 min readTo enable cache logging in Solr, you need to modify the solrconfig.xml file for your Solr core. Look for the <query> tag within the <requestHandler name="/select"> section. Add the following parameter within the <query> tag:<str name="cacheConfig">myCache</str>Replace myCache with the name of the cache you want to enable logging for. You also need to ensure that the cache you specified has logging enabled in the solrconfig.xml file.
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5 min readIn Solr, you can ignore case sensitivity in query by using the function lowercase() or uppercase() on the field you are querying. By converting the field to either all lowercase or all uppercase, you can ensure that the query is not case sensitive. This can be done by modifying the query syntax to include the lowercase() or uppercase() function on the field in question. This way, the query will return results regardless of the case of the text in the field.
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8 min readTo transform a Solr document to a list in Java, you can iterate over the fields of the document and extract the values into a list. You can access the fields of a Solr document using the getFieldNames() method and then retrieve the values of each field using the getFieldValue() method. By looping through the fields and adding their values to a list, you can create a list representation of the Solr document in Java.
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5 min readTo concatenate multiple Solr tokens into one, you can use the Solr function query to concatenate strings or tokens together. This can be achieved by using the concat() function along with the field values or tokens that you want to combine. For example, if you have multiple tokens stored in different fields in your Solr index, you can create a new field in your query that concatenates these tokens together using the concat() function.