Examples with FunctionNode org.apache.cayenne.access.sqlbuilder.sqltree.FunctionNode used on opensource projects

Example 1 with FunctionNode

use of org.apache.cayenne.access.sqlbuilder.sqltree.FunctionNode in project cayenne by apache.

the class FrontBaseSQLTreeProcessor method onFunctionNode.

@Override
protected void onFunctionNode(Node parent, FunctionNode child, int index) {
    switch(child.getFunctionName()) {
        case "CONCAT":
            replaceChild(parent, index, new OpExpressionNode("||"));
            break;
        case "LOCATE":
            // POSITION (substr IN str)
            replaceChild(parent, index, new FunctionNode("POSITION", child.getAlias()) {

                @Override
                public void appendChildrenSeparator(QuotingAppendable buffer, int childIdx) {
                    buffer.append(" IN ");
                }
            });
            break;
        case "LENGTH":
            replaceChild(parent, index, new FunctionNode("CHAR_LENGTH", child.getAlias()));
            break;
        case "SUBSTRING":
            // SUBSTRING (str FROM offset FOR length)
            replaceChild(parent, index, new FunctionNode("SUBSTRING", child.getAlias()) {

                @Override
                public void appendChildrenSeparator(QuotingAppendable buffer, int childIdx) {
                    if (childIdx == 0) {
                        buffer.append(" FROM ");
                    } else if (childIdx == 1) {
                        buffer.append(" FOR ");
                    }
                }
            });
            break;
        case "YEAR":
        case "MONTH":
        case "DAY":
        case "DAY_OF_MONTH":
        case "HOUR":
        case "MINUTE":
        case "SECOND":
            Node functionReplacement = new ExtractFunctionNode(child.getAlias());
            String functionName = child.getFunctionName();
            if ("DAY_OF_MONTH".equals(functionName)) {
                functionName = "DAY";
            }
            functionReplacement.addChild(new TextNode(functionName));
            replaceChild(parent, index, functionReplacement);
            break;
        case "DAY_OF_WEEK":
        case "DAY_OF_YEAR":
        case "WEEK":
            throw new CayenneRuntimeException("Function %s() is unsupported in FrontBase.", child.getFunctionName());
    }
}

Example 2 with FunctionNode

use of org.apache.cayenne.access.sqlbuilder.sqltree.FunctionNode in project cayenne by apache.

the class IngressSQLTreeProcessor method onFunctionNode.

@Override
protected void onFunctionNode(Node parent, FunctionNode child, int index) {
    switch(child.getFunctionName()) {
        case "CONCAT":
            replaceChild(parent, index, new OpExpressionNode("+"));
            return;
        case "LOCATE":
            Node child0 = child.getChild(0);
            child.replaceChild(0, child.getChild(1));
            child.replaceChild(1, child0);
            return;
        case "SUBSTRING":
            Node replacement = new FunctionNode("SUBSTRING", child.getAlias(), true) {

                @Override
                public void appendChildrenSeparator(QuotingAppendable buffer, int childIdx) {
                    // 0, CAST(1 AS INTEGER), CAST(2 AS INTEGER)
                    if (childIdx == 1 || childIdx == 2) {
                        buffer.append(" AS INTEGER)");
                    }
                    if (childIdx == 0 || childIdx == 1) {
                        buffer.append(", CAST(");
                    }
                }

                @Override
                public void appendChildrenEnd(QuotingAppendable buffer) {
                    buffer.append(" AS INTEGER)");
                    super.appendChildrenEnd(buffer);
                }
            };
            replaceChild(parent, index, replacement);
            return;
        case "TRIM":
            replaceChild(parent, index, new FunctionNode("RTRIM(LTRIM", child.getAlias(), true) {

                @Override
                public void appendChildrenEnd(QuotingAppendable buffer) {
                    buffer.append(')');
                    super.appendChildrenEnd(buffer);
                }
            });
            return;
        case "DAY_OF_WEEK":
        case "DAY_OF_MONTH":
        case "DAY_OF_YEAR":
            // ingres variants are without '_'
            replaceChild(parent, index, new FunctionNode(child.getFunctionName().replace("_", ""), child.getAlias(), true));
            return;
    }
}

Example 3 with FunctionNode

use of org.apache.cayenne.access.sqlbuilder.sqltree.FunctionNode in project cayenne by apache.

the class OracleSQLTreeProcessor method onFunctionNode.

@Override
protected void onFunctionNode(Node parent, FunctionNode child, int index) {
    String functionName = child.getFunctionName();
    Node functionReplacement = null;
    switch(functionName) {
        case "LOCATE":
            functionReplacement = new FunctionNode("INSTR", child.getAlias(), true);
            for (int i = 0; i <= 1; i++) {
                functionReplacement.addChild(child.getChild(1 - i));
            }
            parent.replaceChild(index, functionReplacement);
            return;
        case "DAY_OF_YEAR":
        case "DAY_OF_WEEK":
        case "WEEK":
            functionReplacement = new FunctionNode("TO_CHAR", child.getAlias(), true);
            functionReplacement.addChild(child.getChild(0));
            if ("DAY_OF_YEAR".equals(functionName)) {
                functionName = "'DDD'";
            } else if ("DAY_OF_WEEK".equals(functionName)) {
                functionName = "'D'";
            } else {
                functionName = "'IW'";
            }
            functionReplacement.addChild(new TextNode(functionName));
            parent.replaceChild(index, functionReplacement);
            return;
        case "SUBSTRING":
            functionReplacement = new FunctionNode("SUBSTR", child.getAlias(), true);
            break;
        case "CONCAT":
            functionReplacement = new OpExpressionNode("||");
            break;
        case "CURRENT_TIMESTAMP":
        case "CURRENT_DATE":
            functionReplacement = new FunctionNode(functionName, child.getAlias(), false);
            break;
        case "CURRENT_TIME":
            functionReplacement = new FunctionNode("{fn CURTIME()}", child.getAlias(), false);
            break;
        case "YEAR":
        case "MONTH":
        case "DAY":
        case "DAY_OF_MONTH":
        case "HOUR":
        case "MINUTE":
        case "SECOND":
            functionReplacement = new FunctionNode("EXTRACT", child.getAlias(), true) {

                @Override
                public void appendChildrenSeparator(QuotingAppendable buffer, int childIdx) {
                    buffer.append(' ');
                }
            };
            if ("DAY_OF_MONTH".equals(functionName)) {
                functionName = "DAY";
            }
            functionReplacement.addChild(new TextNode(functionName + " FROM "));
            break;
    }
    if (functionReplacement != null) {
        replaceChild(parent, index, functionReplacement);
    }
}

Example 4 with FunctionNode

use of org.apache.cayenne.access.sqlbuilder.sqltree.FunctionNode in project cayenne by apache.

the class BaseSQLTreeProcessor method wrapInFunction.

protected static Node wrapInFunction(Node node, String function) {
    FunctionNode functionNode = new FunctionNode(function, null);
    functionNode.addChild(node);
    return functionNode;
}

Example 5 with FunctionNode

use of org.apache.cayenne.access.sqlbuilder.sqltree.FunctionNode in project cayenne by apache.

the class TypeAwareSQLTreeProcessor method wrapInFunction.

protected static Node wrapInFunction(Node node, String function) {
    FunctionNode functionNode = new FunctionNode(function, null);
    functionNode.addChild(node);
    return functionNode;
}