# Query

Allows you to submit a natural language, Boolean, bracketed Boolean, keyword, field, or fuzzy query to IDOL server.

You must define your query by setting at least one of Text and FieldText.

PQF (Prefix Query Format) and CQL (Common or Contextual Query Language) are external query formats used for Z39.50 servers.

## Example

PQF syntax:

    http://12.3.4.56:6000/action=Query&Text="Abyssinian Bobtail"
    http://12.3.4.56:6000/action=Query&Text=@and fat cat
    http://12.3.4.56:6000/action=Query&Text=@attr 1=4 @attr4=1 “hot tin roof”

CQL syntax:

    http://12.3.4.56:6000/action=Query&Text="Abyssinian Bobtail"
    http://12.3.4.56:6000/action=Query&Text=fat and cat
    http://12.3.4.56:6000/action=Query&Text=title="hot tin roof"

This action request documents that are conceptually similar to the specified `Text` from the Z39.50 server.

## Required Parameters

The following action parameters are required.

Parameter | Description
--- | ---
FieldText | Applies field restrictions to results.
Text | The query text.

## Optional Parameters

This action accepts the following optional parameters.

Parameter | Description
--- | ---
AgentBooleanField | A field that contains Boolean agent expressions
AgentSecurityField | A field that contains the SecurityInfo for secure documents in AgentBoolean queries.
AutoPhrase | Whether to apply automatic phrase quotations to all terms in the query text.
CaseSensitive | Determines the case sensitivity of field specifiers.
DAHEndState | Sets the maximum number of results to print.
DAHStartState | Prints results from only this position forward.
DatabaseMatch | The database to retrieve results from.
FederatorParams | A list of parameters to append to a query to Federator child engines.
FieldRestriction | The fields that restrict the query terms.
FieldTextField | A field whose content must be used as the query’s FieldText.
HardFieldRestriction | Specifies that the fields in FieldRestriction are the only fields allowed in the matching process for both Text and FieldText.
MaxResults | The maximum number of results to return.
SecurityInfo | The security details.
Sort | The display order of results.
Start | Prints results only from this position onwards.
StateDontMatchID | The state token of a group of documents to not return.
StateMatchID | The state token of a group of documents to return.
StoreState | Whether to store results in a state token.
StoredStateDetail | Returns `Engine` and `EngineIndex` elements for each document returned, as well as child server details.
TextParse | Extracts `TextParseIndexType` fields from the specified Text and uses them for AgentBoolean querying.
TotalResults | Displays the total number of results found.

This action accepts the following standard ACI action parameters.

Parameter | Description
--- | ---
ActionID | A string to use to identify an ACI action.
EncryptResponse | Encrypt the output.
FileName | The file to write output to.
ForceTemplateRefresh | Forces the server to load the template from disk.
Output | Writes output to a file.
ResponseFormat | The format of the action output.
Template | The template to use for the action output.
TemplateParamCSVs | A list of variables to use for the specified template.

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