Examples with OExpression com.orientechnologies.orient.core.sql.parser.OExpression used on opensource projects

Example 1 with OExpression

use of com.orientechnologies.orient.core.sql.parser.OExpression in project orientdb by orientechnologies.

the class OCommandExecutorSQLAlterProperty method parse.

public OCommandExecutorSQLAlterProperty parse(final OCommandRequest iRequest) {
    final OCommandRequestText textRequest = (OCommandRequestText) iRequest;
    String queryText = textRequest.getText();
    String originalQuery = queryText;
    try {
        queryText = preParse(queryText, iRequest);
        textRequest.setText(queryText);
        init((OCommandRequestText) iRequest);
        StringBuilder word = new StringBuilder();
        int oldPos = 0;
        int pos = nextWord(parserText, parserTextUpperCase, oldPos, word, true);
        if (pos == -1 || !word.toString().equals(KEYWORD_ALTER))
            throw new OCommandSQLParsingException("Keyword " + KEYWORD_ALTER + " not found. Use " + getSyntax(), parserText, oldPos);
        oldPos = pos;
        pos = nextWord(parserText, parserTextUpperCase, oldPos, word, true);
        if (pos == -1 || !word.toString().equals(KEYWORD_PROPERTY))
            throw new OCommandSQLParsingException("Keyword " + KEYWORD_PROPERTY + " not found. Use " + getSyntax(), parserText, oldPos);
        oldPos = pos;
        pos = nextWord(parserText, parserTextUpperCase, oldPos, word, false);
        if (pos == -1)
            throw new OCommandSQLParsingException("Expected <class>.<property>. Use " + getSyntax(), parserText, oldPos);
        String[] parts = word.toString().split("\\.");
        if (parts.length != 2) {
            if (parts[1].startsWith("`") && parts[parts.length - 1].endsWith("`")) {
                StringBuilder fullName = new StringBuilder();
                for (int i = 1; i < parts.length; i++) {
                    if (i > 1) {
                        fullName.append(".");
                    }
                    fullName.append(parts[i]);
                }
                parts = new String[] { parts[0], fullName.toString() };
            } else {
                throw new OCommandSQLParsingException("Expected <class>.<property>. Use " + getSyntax(), parserText, oldPos);
            }
        }
        className = decodeClassName(parts[0]);
        if (className == null)
            throw new OCommandSQLParsingException("Class not found", parserText, oldPos);
        fieldName = decodeClassName(parts[1]);
        oldPos = pos;
        pos = nextWord(parserText, parserTextUpperCase, oldPos, word, true);
        if (pos == -1)
            throw new OCommandSQLParsingException("Missing property attribute to change. Use " + getSyntax(), parserText, oldPos);
        final String attributeAsString = word.toString();
        try {
            attribute = OProperty.ATTRIBUTES.valueOf(attributeAsString.toUpperCase(Locale.ENGLISH));
        } catch (IllegalArgumentException e) {
            throw new OCommandSQLParsingException("Unknown property attribute '" + attributeAsString + "'. Supported attributes are: " + Arrays.toString(OProperty.ATTRIBUTES.values()), parserText, oldPos);
        }
        value = parserText.substring(pos + 1).trim();
        if (attribute.equals(ATTRIBUTES.NAME) || attribute.equals(ATTRIBUTES.LINKEDCLASS)) {
            value = decodeClassName(value);
        }
        if (value.length() == 0) {
            throw new OCommandSQLParsingException("Missing property value to change for attribute '" + attribute + "'. Use " + getSyntax(), parserText, oldPos);
        }
        if (preParsedStatement != null) {
            OAlterPropertyStatement stm = (OAlterPropertyStatement) preParsedStatement;
            OExpression settingExp = stm.settingValue;
            if (settingExp != null) {
                Object expValue = settingExp.execute(null, context);
                if (expValue == null) {
                    expValue = settingExp.toString();
                }
                if (expValue != null) {
                    if (expValue instanceof Date) {
                        value = ODateHelper.getDateTimeFormatInstance().format((Date) expValue);
                    } else
                        value = expValue.toString();
                } else
                    value = null;
                if (attribute.equals(ATTRIBUTES.NAME) || attribute.equals(ATTRIBUTES.LINKEDCLASS)) {
                    value = decodeClassName(value);
                }
            } else if (stm.customPropertyName != null) {
                value = "" + stm.customPropertyName.getStringValue() + "=" + stm.customPropertyValue.toString();
            } else if (stm.clearCustom) {
                value = "clear";
            }
        } else {
            if (value.equalsIgnoreCase("null")) {
                value = null;
            }
            if (value != null && isQuoted(value)) {
                value = removeQuotes(value);
            }
        }
    } finally {
        textRequest.setText(originalQuery);
    }
    return this;
}