Package org.eclipse.persistence.expressions

Examples of org.eclipse.persistence.expressions.ExpressionOperator

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    /**
     * INTERNAL:
     * Use CONVERT function for toNumber.
     */
    public static ExpressionOperator toNumberOperator() {
        ExpressionOperator exOperator = new ExpressionOperator();
        exOperator.setType(ExpressionOperator.FunctionOperator);
        exOperator.setSelector(ExpressionOperator.ToNumber);
        Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(2);
        v.addElement("CONVERT(");
        v.addElement(",DECIMAL)");
        exOperator.printsAs(v);
        exOperator.bePrefix();
        exOperator.setNodeClass(ClassConstants.FunctionExpression_Class);
        return exOperator;
    }
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    /**
     * INTERNAL:
     * Use MONTH function for MONTH_BETWEEN.
     */
    public static ExpressionOperator monthsBetweenOperator() {
        ExpressionOperator exOperator = new ExpressionOperator();
        exOperator.setType(ExpressionOperator.FunctionOperator);
        exOperator.setSelector(ExpressionOperator.MonthsBetween);
        Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(2);
        v.addElement("(MONTH(");
        v.addElement(") - MONTH(");
        v.addElement("))");
        exOperator.printsAs(v);
        exOperator.bePrefix();
        exOperator.setNodeClass(ClassConstants.FunctionExpression_Class);
        return exOperator;
    }
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     * INTERNAL:
     * Build FB equivalent to SUBSTR(x, y)
     * FB: SUBSTRING(x FROM y)
     */
    protected ExpressionOperator substring() {
        ExpressionOperator exOperator = new ExpressionOperator();
        exOperator.setType(ExpressionOperator.FunctionOperator);
        exOperator.setSelector(ExpressionOperator.SubstringSingleArg);
        Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(5);
        v.addElement("SUBSTRING(");
        v.addElement(" FROM ");
        v.addElement(")");
        exOperator.printsAs(v);
        exOperator.bePrefix();
        int[] indices = {0, 1};
        exOperator.setArgumentIndices(indices);
        exOperator.setNodeClass(ClassConstants.FunctionExpression_Class);
        return exOperator;
    }
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     * INTERNAL:
     * Build FB equivalent to SUBSTR(x, y, z)
     * FB: SUBSTRING(x FROM y FOR z)
     */
    protected ExpressionOperator substring2() {
        ExpressionOperator exOperator = new ExpressionOperator();
        exOperator.setType(ExpressionOperator.FunctionOperator);
        exOperator.setSelector(ExpressionOperator.Substring);
        Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(5);
        v.addElement("SUBSTRING(");
        v.addElement(" FROM ");
        v.addElement(" FOR ");
        v.addElement(")");
        exOperator.printsAs(v);
        exOperator.bePrefix();
        int[] indices = {0, 1, 2};
        exOperator.setArgumentIndices(indices);
        exOperator.setNodeClass(ClassConstants.FunctionExpression_Class);
        return exOperator;
    }
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     * INTERNAL:
     * Build FB equivalent to GREATEST(x, y)
     * FB: CASE WHEN x >= y THEN x ELSE y END
     */
    protected ExpressionOperator greatest() {
        ExpressionOperator exOperator = new ExpressionOperator();
        exOperator.setType(ExpressionOperator.FunctionOperator);
        exOperator.setSelector(ExpressionOperator.Greatest);
        Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(5);
        v.addElement("(CASE WHEN ");
        v.addElement(" >= ");
        v.addElement(" THEN ");
        v.addElement(" ELSE ");
        v.addElement(" END)");
        exOperator.printsAs(v);
        exOperator.bePrefix();
        int[] indices = {0, 1, 0, 1};
        exOperator.setArgumentIndices(indices);
        exOperator.setNodeClass(ClassConstants.FunctionExpression_Class);
        return exOperator;
    }
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     * INTERNAL:
     * Build FB equivalent to LTRIM(string_exp).
     * FB: TRIM(LEADING FROM string_exp)
     */
    protected ExpressionOperator leftTrim() {
        ExpressionOperator exOperator = new ExpressionOperator();
        exOperator.setType(ExpressionOperator.FunctionOperator);
        exOperator.setSelector(ExpressionOperator.LeftTrim);
        Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(5);
        v.addElement("TRIM(LEADING FROM ");
        v.addElement(")");
        exOperator.printsAs(v);
        exOperator.bePrefix();
        int[] indices = {0};
        exOperator.setArgumentIndices(indices);
        exOperator.setNodeClass(ClassConstants.FunctionExpression_Class);
        return exOperator;
    }
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     * INTERNAL:
     * Build FB equivalent to LTRIM(string_exp).
     * FB: TRIM(LEADING FROM string_exp)
     */
    protected ExpressionOperator rightTrim() {
        ExpressionOperator exOperator = new ExpressionOperator();
        exOperator.setType(ExpressionOperator.FunctionOperator);
        exOperator.setSelector(ExpressionOperator.RightTrim);
        Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(5);
        v.addElement("TRIM(TRAILING FROM ");
        v.addElement(")");
        exOperator.printsAs(v);
        exOperator.bePrefix();
        int[] indices = {0};
        exOperator.setArgumentIndices(indices);
        exOperator.setNodeClass(ClassConstants.FunctionExpression_Class);
        return exOperator;
    }
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     * INTERNAL:
     * Build FB equivalent to RTRIM(string_exp, character).
     * FB: TRIM(TRAILING character FROM string_exp)
     */
    protected ExpressionOperator rightTrim2() {
        ExpressionOperator exOperator = new ExpressionOperator();
        exOperator.setType(ExpressionOperator.FunctionOperator);
        exOperator.setSelector(ExpressionOperator.RightTrim2);
        Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(5);
        v.addElement("TRIM(TRAILING ");
        v.addElement(" FROM ");
        v.addElement(")");
        exOperator.printsAs(v);
        exOperator.bePrefix();
        int[] indices = {1, 0};
        exOperator.setArgumentIndices(indices);
        exOperator.setNodeClass(ClassConstants.FunctionExpression_Class);
        return exOperator;
    }
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    /**
     * INTERNAL:
     * Use CONVERT function for toNumber.
     */
    public static ExpressionOperator toNumberOperator() {
        ExpressionOperator exOperator = new ExpressionOperator();
        exOperator.setType(ExpressionOperator.FunctionOperator);
        exOperator.setSelector(ExpressionOperator.ToNumber);
        Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(2);
        v.addElement("CAST(");
        v.addElement(" AS NUMERIC)");
        exOperator.printsAs(v);
        exOperator.bePrefix();
        exOperator.setNodeClass(ClassConstants.FunctionExpression_Class);
        return exOperator;
    }
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    /**
     * INTERNAL:
     * Use MONTH function for MONTH_BETWEEN.
     */
    public static ExpressionOperator monthsBetweenOperator() {
        ExpressionOperator exOperator = new ExpressionOperator();
        exOperator.setType(ExpressionOperator.FunctionOperator);
        exOperator.setSelector(ExpressionOperator.MonthsBetween);
        Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(2);
        v.addElement("(MONTH(");
        v.addElement(") - MONTH(");
        v.addElement("))");
        exOperator.printsAs(v);
        exOperator.bePrefix();
        exOperator.setNodeClass(ClassConstants.FunctionExpression_Class);
        return exOperator;
    }
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  • org.eclipse.persistence.internal.sessions.factories.ObjectPersistenceRuntimeXMLProject
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  • org.eclipse.persistence.platform.database.FirebirdPlatform
  • org.eclipse.persistence.platform.database.H2Platform
  • org.eclipse.persistence.platform.database.HANAPlatform
  • org.eclipse.persistence.platform.database.HSQLPlatform
  • org.eclipse.persistence.platform.database.Informix11Platform
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