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Code Duplication    Length = 4-8 lines in 3 locations

src/AppserverIo/Collections/AbstractCollection.php 1 location

@@ 157-160 (lines=4) @@
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            throw new NullPointerException('Passed key is null');
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        }
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        // check if a primitive datatype is passed
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        if (is_integer($key) || is_string($key) || is_double($key) || is_bool($key)) {
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            // return TRUE if a value for the passed key exists, else FALSE
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            return isset($this->items[$key]);
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        }
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        // check if an object is passed
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        if (is_object($key)) {
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            if ($key instanceof Strng) {

src/AppserverIo/Collections/HashMap.php 1 location

@@ 88-93 (lines=6) @@
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            throw new NullPointerException('Passed key is null');
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        }
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        // check if a primitive datatype is passed
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        if (is_integer($key) || is_string($key) || is_double($key) || is_bool($key)) {
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            // add the item to the array
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            $this->items[$key] = $object;
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            // and return
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            return;
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        }
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        // check if an object is passed
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        if (is_object($key)) {
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            if ($key instanceof Strng) {

src/AppserverIo/Collections/TreeMap.php 1 location

@@ 101-108 (lines=8) @@
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            throw new NullPointerException('Passed key is null');
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        }
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        // check if a primitive datatype is passed
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        if (is_integer($key) || is_string($key) || is_double($key) || is_bool($key)) {
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            // add the passed object to the internal array
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            $this->items[$key] = $object;
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            // sort the instance
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            $this->sort();
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            // return the instance
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            return $this;
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        }
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        // check if an object is passed
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        if (is_object($key)) {
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            if ($key instanceof Strng) {