List of ifNotExists() Examples

Examples of ifNotExists()

com.datastax.driver.core.querybuilder.Insert.ifNotExists()
Sets the 'IF NOT EXISTS' option for this INSERT statement.
An insert with that option will not succeed unless the row does not exist at the time the insertion is execution. The existence check and insertions are done transactionally in the sense that if multiple clients attempt to create a given row with this option, then at most one may succeed.
Please keep in mind that using this option has a non negligible performance impact and should be avoided when possible. @return this INSERT statement.

Examples of com.datastax.driver.core.querybuilder.Insert.ifNotExists()

        log.trace("Generate prepared statement for INSERT on {}", entityMeta);
        PropertyMeta idMeta = entityMeta.getIdMeta();
        final EntityMetaConfig metaConfig = entityMeta.config();
        Insert insert = insertInto(metaConfig.getKeyspaceName(), metaConfig.getTableName());
        if (options.isIfNotExists()) {
            insert.ifNotExists();
        }


        idMeta.forStatementGeneration().generateInsertPrimaryKey(insert);


        for (PropertyMeta pm : pms) {

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