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The "FunctionQuery" page has been changed by HossMan: http://wiki.apache.org/solr/FunctionQuery?action=diff&rev1=91&rev2=92 Comment: SOLR-4138 currency(...) function . Example Syntax: '''q=product(popularity, query({!dismax qf=text v='solr rocks'}))''' returns the product of the popularity and the score of the dismax query. . Example Syntax: '''q=product(popularity, query($qq))&qq={!dismax qf=text}solr rocks''' is equivalent to the previous query, using param dereferencing. . Example Syntax: '''q=product(popularity, query($qq,0.1))&qq={!dismax qf=text}solr rocks''' specifies a default score of 0.1 for documents that don't match the dismax query. + + == currency == + + <!> [[Solr4.2]] {{{currency(field_name,[CODE])}}} is a function that can operate on any {{{field_name}}} that is implemented as CurrencyField. Unlike the raw values generated when using a currency field direction as input to another function, the {{{currency()}}} function can be used to return human readable values in either the default currency configured for the field type, or an arbitrary currency specified in the function. + + . Example Syntax: '''currency(price_c)''' returns the price_c field values in the default currency + . Example Syntax: '''currency(price_c,EUR)''' returns the price_c field values converted to Euros, regardless of the default currency + + See CurrencyField for more details. == linear == linear(x,m,c) implements m*x+c where m and c are constants and x is an arbitrary function. This is equivalent to '''sum(product(m,x),c)''', but slightly more efficient as it is implemented as a single function.
