java.lang.Object
- com.tangosol.coherence.dslquery.function.FunctionBuilders

```
public final class FunctionBuilders
extends Object
```
This class contains a number of ParameterizedBuilder implementations for the standard built-in CohQL functions.

Since:

Coherence 12.2.1

Author:

jk 2014.05.07

Field Summary

Fields
Modifier and Type	Field	Description
`static ParameterizedBuilder<BigDecimalAverage>`	`BIG_DECIMAL_AVERAGE_FUNCTION_BUILDER`	This builder will realize instances of the `BigDecimalAverage` aggregator.
`static ParameterizedBuilder<BigDecimalMax>`	`BIG_DECIMAL_MAX_FUNCTION_BUILDER`	This builder will realize instances of the `BigDecimalMax` aggregator.
`static ParameterizedBuilder<BigDecimalMin>`	`BIG_DECIMAL_MIN_FUNCTION_BUILDER`	This builder will realize instances of the `BigDecimalMin` aggregator.
`static ParameterizedBuilder<BigDecimalSum>`	`BIG_DECIMAL_SUM_FUNCTION_BUILDER`	This builder will realize instances of the `BigDecimalSum` aggregator.
`static ParameterizedBuilder<String>`	`CONCAT_FUNCTION_BUILDER`	This builder will result in a concatenation of all function arguments to a single string result.
`static ParameterizedBuilder<Count>`	`COUNT_FUNCTION_BUILDER`	This builder will realize instances of the `Count` aggregator.
`static ParameterizedBuilder<DoubleAverage>`	`DOUBLE_AVERAGE_FUNCTION_BUILDER`	This builder will realize instances of the `DoubleAverage` aggregator.
`static ParameterizedBuilder<DoubleMax>`	`DOUBLE_MAX_FUNCTION_BUILDER`	This builder will realize instances of the `DoubleMax` aggregator.
`static ParameterizedBuilder<DoubleMin>`	`DOUBLE_MIN_FUNCTION_BUILDER`	This builder will realize instances of the `DoubleMin` aggregator.
`static ParameterizedBuilder<DoubleSum>`	`DOUBLE_SUM_FUNCTION_BUILDER`	This builder will realize instances of the `DoubleSum` aggregator.
`static ParameterizedBuilder<ValueExtractor>`	`KEY_FUNCTION_BUILDER`	This `ParameterizedBuilder` handles the key() function.
`static ParameterizedBuilder<LongMax>`	`LONG_MAX_FUNCTION_BUILDER`	This builder will realize instances of the `LongMax` aggregator.
`static ParameterizedBuilder<LongMin>`	`LONG_MIN_FUNCTION_BUILDER`	This builder will realize instances of the `LongMin` aggregator.
`static ParameterizedBuilder<LongSum>`	`LONG_SUM_FUNCTION_BUILDER`	This builder will realize instances of the `LongSum` aggregator.
`static ParameterizedBuilder<ReflectionExtractor>`	`METHOD_CALL_FUNCTION_BUILDER`	This builder will realize instances of a `ReflectionExtractor` that will call a specific method.
`static ParameterizedBuilder<IdentityExtractor>`	`VALUE_FUNCTION_BUILDER`	This builder will realize instances of the `IdentityExtractor` aggregator.

Constructor Summary

Constructors
Constructor Description

FunctionBuilders()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`protected static <V> V`	`getFirstParameter(ParameterResolver resolver, ParameterList listParameters, Class<V> clzExpected)`	Extract the first parameter from the listParameters argument.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - BIG_DECIMAL_AVERAGE_FUNCTION_BUILDER
```
public static ParameterizedBuilder<BigDecimalAverage> BIG_DECIMAL_AVERAGE_FUNCTION_BUILDER
```
    This builder will realize instances of the BigDecimalAverage aggregator. This builder is called as a result of the CohQL bd_avg() function.
  - BIG_DECIMAL_MAX_FUNCTION_BUILDER
```
public static ParameterizedBuilder<BigDecimalMax> BIG_DECIMAL_MAX_FUNCTION_BUILDER
```
    This builder will realize instances of the BigDecimalMax aggregator. This builder is called as a result of the CohQL bd_max() function.
  - BIG_DECIMAL_MIN_FUNCTION_BUILDER
```
public static ParameterizedBuilder<BigDecimalMin> BIG_DECIMAL_MIN_FUNCTION_BUILDER
```
    This builder will realize instances of the BigDecimalMin aggregator. This builder is called as a result of the CohQL bd_min() function.
  - BIG_DECIMAL_SUM_FUNCTION_BUILDER
```
public static ParameterizedBuilder<BigDecimalSum> BIG_DECIMAL_SUM_FUNCTION_BUILDER
```
    This builder will realize instances of the BigDecimalSum aggregator. This builder is called as a result of the CohQL bd_sum() function.
  - CONCAT_FUNCTION_BUILDER
```
public static ParameterizedBuilder<String> CONCAT_FUNCTION_BUILDER
```
    This builder will result in a concatenation of all function arguments to a single string result. This builder is called as a result of the CohQL concat() function.
    
    Since:
    
    21.06
  - COUNT_FUNCTION_BUILDER
```
public static ParameterizedBuilder<Count> COUNT_FUNCTION_BUILDER
```
    This builder will realize instances of the Count aggregator. This builder is called as a result of the CohQL count() function.
  - DOUBLE_AVERAGE_FUNCTION_BUILDER
```
public static ParameterizedBuilder<DoubleAverage> DOUBLE_AVERAGE_FUNCTION_BUILDER
```
    This builder will realize instances of the DoubleAverage aggregator. This builder is called as a result of the CohQL avg() function.
  - DOUBLE_MAX_FUNCTION_BUILDER
```
public static ParameterizedBuilder<DoubleMax> DOUBLE_MAX_FUNCTION_BUILDER
```
    This builder will realize instances of the DoubleMax aggregator. This builder is called as a result of the CohQL max() function.
  - DOUBLE_MIN_FUNCTION_BUILDER
```
public static ParameterizedBuilder<DoubleMin> DOUBLE_MIN_FUNCTION_BUILDER
```
    This builder will realize instances of the DoubleMin aggregator. This builder is called as a result of the CohQL min() function.
  - DOUBLE_SUM_FUNCTION_BUILDER
```
public static ParameterizedBuilder<DoubleSum> DOUBLE_SUM_FUNCTION_BUILDER
```
    This builder will realize instances of the DoubleSum aggregator. This builder is called as a result of the CohQL sum() function.
  - LONG_MAX_FUNCTION_BUILDER
```
public static ParameterizedBuilder<LongMax> LONG_MAX_FUNCTION_BUILDER
```
    This builder will realize instances of the LongMax aggregator. This builder is called as a result of the CohQL long_max() function.
  - LONG_MIN_FUNCTION_BUILDER
```
public static ParameterizedBuilder<LongMin> LONG_MIN_FUNCTION_BUILDER
```
    This builder will realize instances of the LongMin aggregator. This builder is called as a result of the CohQL long_min() function.
  - LONG_SUM_FUNCTION_BUILDER
```
public static ParameterizedBuilder<LongSum> LONG_SUM_FUNCTION_BUILDER
```
    This builder will realize instances of the LongSum aggregator. This builder is called as a result of the CohQL long_sum() function.
  - METHOD_CALL_FUNCTION_BUILDER
```
public static ParameterizedBuilder<ReflectionExtractor> METHOD_CALL_FUNCTION_BUILDER
```
    This builder will realize instances of a ReflectionExtractor that will call a specific method.
  - VALUE_FUNCTION_BUILDER
```
public static ParameterizedBuilder<IdentityExtractor> VALUE_FUNCTION_BUILDER
```
    This builder will realize instances of the IdentityExtractor aggregator. This builder is called as a result of the CohQL value() function.
  - KEY_FUNCTION_BUILDER
```
public static ParameterizedBuilder<ValueExtractor> KEY_FUNCTION_BUILDER
```
    This ParameterizedBuilder handles the key() function. The type of ValueExtractor realized will depend on the type of the first element in the args array passed to the realize method. This builder is called as a result of the CohQL key() function.
- Constructor Detail
  - FunctionBuilders
```
public FunctionBuilders()
```
- Method Detail
  - getFirstParameter
```
protected static <V> V getFirstParameter(ParameterResolver resolver,
                                         ParameterList listParameters,
                                         Class<V> clzExpected)
```
    Extract the first parameter from the listParameters argument.
    
    Type Parameters:
    
    V - the parameter type
    
    Parameters:
    
    resolver - the ParameterResolver for resolving named Parameters
    
    listParameters - an optional ParameterList (may be null) to be used for realizing the instance, eg: used as constructor parameters
    
    clzExpected - the expected type of the first parameter
    
    Returns:
    
    the first parameter from the listParameters argument
    
    Throws:
    
    AssertionException - if the listParameters list is empty or if the first parameter resolved from the list is null or not of the expected type.

Class FunctionBuilders

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

BIG_DECIMAL_AVERAGE_FUNCTION_BUILDER

BIG_DECIMAL_MAX_FUNCTION_BUILDER

BIG_DECIMAL_MIN_FUNCTION_BUILDER

BIG_DECIMAL_SUM_FUNCTION_BUILDER

CONCAT_FUNCTION_BUILDER

COUNT_FUNCTION_BUILDER

DOUBLE_AVERAGE_FUNCTION_BUILDER

DOUBLE_MAX_FUNCTION_BUILDER

DOUBLE_MIN_FUNCTION_BUILDER

DOUBLE_SUM_FUNCTION_BUILDER

LONG_MAX_FUNCTION_BUILDER

LONG_MIN_FUNCTION_BUILDER

LONG_SUM_FUNCTION_BUILDER

METHOD_CALL_FUNCTION_BUILDER

VALUE_FUNCTION_BUILDER

KEY_FUNCTION_BUILDER

Constructor Detail

FunctionBuilders

Method Detail

getFirstParameter