public function delete($configurationIdentifier)
    {
        /**
         * Checks if the value is defined in the configuration elements.
         */
        if (!array_key_exists($configurationIdentifier, $this->configurationElements)) {
            throw new ConfigurationParameterNotFoundException();
        }

        /**
         * Checks if the configuration element is read-only.
         */
        if (
            is_array($this->configurationElements[$configurationIdentifier]) &&
            $this->configurationElements[$configurationIdentifier]['read_only'] === true
        ) {
            throw new ConfigurationNotEditableException();
        }

        $valueIsCached = $this
            ->cache
            ->contains($configurationIdentifier);

        /**
         * The value is cached, so first we have to remove it.
         */
        if (false !== $valueIsCached) {
            $this
                ->cache
                ->delete($configurationIdentifier);
        }
        list($configurationNamespace, $configurationKey) = $this->splitConfigurationKey($configurationIdentifier);

        $configurationLoaded = $this->loadConfiguration(
            $configurationNamespace,
            $configurationKey
        );

        if ($configurationLoaded instanceof ConfigurationInterface) {
            /*
             * Configuration is found, delete it
             */
            $this->deleteConfiguration($configurationLoaded);

            return true;
        }

        /*
         * Configuration instance was not found
         */

        return false;
    }
public function delete($configurationIdentifier)
    {
        /**
         * Checks if the value is defined in the configuration elements.
         */
        if (!array_key_exists($configurationIdentifier, $this->configurationElements)) {
            throw new ConfigurationParameterNotFoundException();
        }

        /**
         * Checks if the configuration element is read-only.
         */
        if (
            is_array($this->configurationElements[$configurationIdentifier]) &&
            $this->configurationElements[$configurationIdentifier]['read_only'] === true
        ) {
            throw new ConfigurationNotEditableException();
        }

        $valueIsCached = $this
            ->cache
            ->contains($configurationIdentifier);

        /**
         * The value is cached, so first we have to remove it.
         */
        if (false !== $valueIsCached) {
            $this
                ->cache
                ->delete($configurationIdentifier);
        }
        list($configurationNamespace, $configurationKey) = $this->splitConfigurationKey($configurationIdentifier);

        $configurationLoaded = $this->loadConfiguration(
            $configurationNamespace,
            $configurationKey
        );

        if ($configurationLoaded instanceof ConfigurationInterface) {
            /*
             * Configuration is found, delete it
             */
            $this->deleteConfiguration($configurationLoaded);

            return true;
        }

        /*
         * Configuration instance was not found
         */

        return false;
    }
public function delete ( $ configurationIdentifier ) { /**
         * Checks if the value is defined in the configuration elements.
         */ if ( ! array_key_exists ( $ configurationIdentifier , $ this -> configurationElements ) ) { throw new ConfigurationParameterNotFoundException ( ) ; } /**
         * Checks if the configuration element is read-only.
         */ if ( is_array ( $ this -> configurationElements [ $ configurationIdentifier ] ) && $ this -> configurationElements [ $ configurationIdentifier ] [ 'read_only' ] === true ) { throw new ConfigurationNotEditableException ( ) ; } $ valueIsCached = $ this -> cache -> contains ( $ configurationIdentifier ) ; /**
         * The value is cached, so first we have to remove it.
         */ if ( false !== $ valueIsCached ) { $ this -> cache -> delete ( $ configurationIdentifier ) ; } list ( $ configurationNamespace , $ configurationKey ) = $ this -> splitConfigurationKey ( $ configurationIdentifier ) ; $ configurationLoaded = $ this -> loadConfiguration ( $ configurationNamespace , $ configurationKey ) ; if ( $ configurationLoaded instanceof ConfigurationInterface ) { /*
             * Configuration is found, delete it
             */ $ this -> deleteConfiguration ( $ configurationLoaded ) ; return true ; } /*
         * Configuration instance was not found
         */ return false ; }
Deletes a parameter given the format "namespace.key".

@param string $configurationIdentifier

@return bool

@throws ConfigurationNotEditableException       Configuration parameter is read-only
@throws ConfigurationParameterNotFoundException Configuration parameter not found
Deletes a parameter given the format namespace . key .