Package chemaxon.sss.search

Class Search

    • Field Detail

      • searchOptions

        protected final MolSearchOptions searchOptions
        Object to store all search parameters.

      • preMatchMap

        protected Map<Integer,​Integer> preMatchMap
        Map for storing pre-match data. Keys are query atom indexes, values are target atom indexes.

      • MRV_OUTPUT_LEVEL

        protected static final Level MRV_OUTPUT_LEVEL
        MRV format of the query and target is logged at this level.

    • Constructor Detail

      • Search

        public Search()

    • Method Detail

      • setTarget

        public abstract void setTarget​(Molecule mol)
        Specifies the target molecule.

        Note: If the molecule is changed, it will need to be reset for the searcher.

        Parameters:
        mol - the possibly standardized target molecule. See note on aromatic bonds

      • setTarget

        public abstract void setTarget​(Molecule mol,
                               int[] exclude)
        Specifies the target molecule with excluded atoms. Excluded atoms are not used during the search procedure. Atoms connected to excluded ones keep their stereo features.

        Note: If the molecule is changed, it will need to be reset for the searcher.

        Parameters:
        mol - the standardized target molecule. See note on aromatic bonds
        exclude - index of target atoms to exclude from search

      • getTarget

        public abstract Molecule getTarget()
        Retrieves the target molecule.
        Returns:
        the target molecule

      • setQuery

        public abstract void setQuery​(Molecule mol)
        Specifies the query structure to search for. Note: If the molecule is changed, it will need to be reset for the searcher.
        Parameters:
        mol - the standardized query structure. See note on aromatic bonds

      • setQuery

        public abstract void setQuery​(Molecule mol,
                              int[] exclude)
        Specifies the query structure to search for. Excluded atoms are not used during the search procedure. Atoms connected to excluded ones keep their stereo features. Note: If the molecule is changed, it will need to be reset for the searcher.
        Parameters:
        mol - the standardized query structure. See note on aromatic bonds
        exclude - index of atoms to exclude from search

      • getQuery

        public abstract Molecule getQuery()
        Retrieves the query structure.
        Returns:
        the query structure

      • addMatch

        public void addMatch​(int[] queryAtoms,
                     int[] targetAtoms,
                     int length)
        Specifies extra prerequisites of the structure search that queryAtoms[0] must match to targetAtoms[0] only AND queryAtoms[1] must match to targetAtoms[1], etc. If this is impossible, the search methods will report no matching. The use of this method makes the search more effective than checking the hits afterwards.

        Several addMatch() calls represent conditions connected by boolean operator AND.

        The effect of all addMatch() calls can be canceled by clearMatch().

        Parameters:
        queryAtoms - the query atom indexes
        targetAtoms - the target atom indexes
        length - the length for which queryAtoms/targetAtoms should be interpreted.
        Since:
        JChem 2.2

      • clearMatch

        public void clearMatch()
        Clears the extra prerequisites of the structure search specified using addMatch calls.
        Since:
        JChem 2.2

      • isMatchCountInRelation

        public final boolean isMatchCountInRelation​(String relation,
                                            int hitLimit)
                                     throws SearchException
        Decides questions like "does the query match the target at least 3 times", "[] up to 5 times", "[] exactly once". Makes this efficiently, which means it only searches for the number of hits necessary to decide the question.

        Example:

        isMatchCountInRelation("<", 2) - true if the query can be found in the target less than two times.

        Parameters:
        relation - The relational operation of the question. This operation will be used to compare the number of hits to hitLimit. Available values:
        "=" - tests equality to hitLimit.
        "<" - returns true if the number of found hits is less than hitLimit.
        "<=" - less than or equality
        ">" - greater than
        ">=" - greater than or equality
        hitLimit - The limit for the number of hits.
        Returns:
        "actual number of hits (of query in target)" <relation> hitLimit
        Throws:
        SearchException - if encountered during the search.
        See Also:
        getMatchCount()

      • isMatchCountBetween

        public final boolean isMatchCountBetween​(int hitLimitLow,
                                         boolean isLowerLimitIncluded,
                                         int hitLimitHigh,
                                         boolean isHigherLimitIncluded)
                                  throws SearchException
        Decides questions like "does the query match the target between 2 and 5 times (inclusively)" Makes this efficiently, which means it only searches for the number of hits necessary to decide the question.

        Example:

        isMatchCountBetween(2, true, 4, true) - true if the query can be found in the target exactly 2, 3 or 4 times.

        isMatchCountBetween(2, false, 4, false) - true if the query can be found in the target exactly 3 times.

        Parameters:
        hitLimitLow - The lower limit for the number of hits.
        isLowerLimitIncluded - If true, equality is allowed with hitLimitLow.
        hitLimitHigh - The upper limit for the number of hits. If you pass Integer.MAX_VALUE, it will be treated as infinity. (I.e. only the lower limit is applied.)
        isHigherLimitIncluded - If true, equality is allowed with hitLimitHigh.
        Returns:
        Whether the "actual number of hits (of query in target)" is between hitLimitLow and hitLimitHigh, inclusively.
        Throws:
        SearchException - if encountered during the search.
        See Also:
        getMatchCount()

      • isVerbose

        public boolean isVerbose()
        For debugging purposes only.
        Returns:
        true if verbose mode is on.

      • setVerbose

        public void setVerbose​(boolean verbose)
        For debugging purposes only.
        Parameters:
        verbose - enables or disables verbose mode.

      • stop

        public abstract void stop()
        Tries to stop the running search as fast as possible. (E.g. used in another thread.)
        Since:
        JChem 3.0

      • setSearchOptions

        public void setSearchOptions​(SearchOptions options)
        Sets search options. This function makes a copy of the given search options object, thus modification of the original object does not affect future searches unless this method is called again.
        Parameters:
        options - search options. A copy of this object will be stored.
        Since:
        JChem 5.0
        See Also:
        getSearchOptions()

      • getQueryToPrint

        protected Molecule getQueryToPrint()
        For internal purposes only.
        Returns:
        the query to be displayed for debug purposes only.

      • getTargetToPrint

        protected Molecule getTargetToPrint()
        For internal purposes only.
        Returns:
        the target to be displayed for debug purposes only.

      • getTargetAsString

        protected static String getTargetAsString​(Molecule tToPrint)
        For internal purposes only.
        Parameters:
        tToPrint - the molecule to be flattened to a string array
        Returns:
        the target to be displayed for debug purposes only.

      • getQueryAsString

        protected static String getQueryAsString​(Molecule qToPrint)
        For internal purposes only.
        Parameters:
        qToPrint - the molecule to be flattened to a string array
        Returns:
        the query to be displayed for debug purposes only.