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Viewing changes to plugin/java_udf/com/mysql/udf/InternalType.java

  • Committer: Antony T Curtis
  • Date: 2008-04-10 06:09:05 UTC
  • mto: (2542.76.4 mysql-5.1-wl820)
  • mto: This revision was merged to the branch mainline in revision 2772.
  • Revision ID: antony@anubis.xiphis.org-20080410060905-itpom5iyz8ae4dhh
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plugin/java_udf/com/mysql/udf/InternalType.java
 
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package com.mysql.udf;
 
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public abstract class InternalType {
 
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    public final static InternalType UNKNOWN = new InternalType(-1) {
 
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        public Object getArgument(int argIndex, UDFCallback callback) {
 
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            // I'm thinking that this should throw.
 
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            return null;
 
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        }
 
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    };
 
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    public final static InternalType STRING_TYPE = new InternalType(0) {
 
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        public Object getArgument(int argIndex, UDFCallback callback) {
 
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            return callback.getStringArgument(argIndex);
 
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        }
 
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    };
 
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    public final static InternalType REAL_TYPE = new InternalType(1) {
 
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        public Object getArgument(int argIndex, UDFCallback callback) {
 
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            return new Double(callback.getDoubleArgument(argIndex));
 
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        }
 
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    };
 
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    public final static InternalType INTEGER_TYPE = new InternalType(2) {
 
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        public Object getArgument(int argIndex, UDFCallback callback) {
 
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            return new Long(callback.getLongArgument(argIndex));
 
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        }
 
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    };
 
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    public final static InternalType DECIMAL_TYPE = new InternalType(3) {
 
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        public Object getArgument(int argIndex, UDFCallback callback) {
 
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            return callback.getBigDecimalArgument(argIndex);
 
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        }
 
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    };
 
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    public final int typeCode;
 
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    private InternalType(int typeCode) {
 
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        this.typeCode = typeCode;
 
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    }
 
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    public abstract Object getArgument(int argIndex, UDFCallback callback);
 
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    public static InternalType get(int typeCode) throws UDFException {
 
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        if (typeCode == UNKNOWN.typeCode)
 
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            return UNKNOWN;
 
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        if (typeCode == STRING_TYPE.typeCode)
 
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            return STRING_TYPE;
 
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        if (typeCode == REAL_TYPE.typeCode)
 
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            return REAL_TYPE;
 
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        if (typeCode == INTEGER_TYPE.typeCode)
 
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            return INTEGER_TYPE;
 
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        if (typeCode == DECIMAL_TYPE.typeCode)
 
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            return DECIMAL_TYPE;
 
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        throw new UDFException("Bad or illegal typeCode");
 
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    }
 
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}