Examples with Modifier org.z3950.zing.cql.Modifier used on opensource projects

Example 1 with Modifier

use of org.z3950.zing.cql.Modifier in project raml-module-builder by folio-org.

the class CQL2PgJSON method queryByLike.

/**
 * Create an SQL expression using LIKE query syntax.
 *
 * @param hasIndex
 * @param vals
 * @param node
 * @param comparator
 * @param modifiers
 * @return
 */
private String queryByLike(String index, DbIndex dbIndex, IndexTextAndJsonValues vals, CQLTermNode node, String comparator, CqlModifiers modifiers, Table targetTable) throws QueryValidationException {
    final String indexText = vals.getIndexText();
    final Index schemaIndex = ObjectUtils.firstNonNull(dbIndex.getGinIndex(), dbIndex.getLikeIndex(), dbIndex.getUniqueIndex(), dbIndex.getIndex());
    String sql = null;
    List<Modifier> relationModifiers = modifiers.getRelationModifiers();
    if (!relationModifiers.isEmpty()) {
        sql = arrayNode(index, node, modifiers, relationModifiers, schemaIndex, vals, targetTable);
    } else {
        String likeOperator = comparator.equals("<>") ? "NOT LIKE" : "LIKE";
        String term = "'" + Cql2SqlUtil.cql2like(node.getTerm()) + "'";
        String indexMod;
        if (schemaIndex != null && schemaIndex.getMultiFieldNames() != null) {
            indexMod = schemaIndex.getFinalSqlExpression(targetTable.getTableName());
        } else if (schemaIndex != null && schemaIndex.getSqlExpression() != null) {
            indexMod = schemaIndex.getSqlExpression();
        } else {
            indexMod = wrapIndexExpression(indexText, schemaIndex);
        }
        if (schemaIndex != null && schemaIndex == dbIndex.getIndex()) {
            sql = createLikeLengthCase(comparator, indexMod, schemaIndex, likeOperator, term);
        } else {
            sql = indexMod + " " + likeOperator + " " + wrapQueryExpression(term, schemaIndex);
        }
    }
    if (Cql2SqlUtil.hasCqlWildCard(node.getTerm())) {
        // FIXME: right truncation "abc*" works with index/uniqueIndex
        if (!dbIndex.hasGinIndex() && !dbIndex.hasLikeIndex()) {
            String s = String.format("%s, CQL >>> SQL: %s >>> %s", indexText, node.toCQL(), sql);
            logger.log(Level.WARNING, "Doing wildcard LIKE search without index for {0}", s);
        }
    } else {
        if (schemaIndex == null) {
            String s = String.format("%s, CQL >>> SQL: %s >>> %s", indexText, node.toCQL(), sql);
            logger.log(Level.WARNING, "Doing LIKE search without index for {0}", s);
        }
    }
    logger.log(Level.FINE, "index {0} generated SQL {1}", new Object[] { indexText, sql });
    return sql;
}

Example 2 with Modifier

use of org.z3950.zing.cql.Modifier in project raml-module-builder by folio-org.

the class CQL2PgJSON method arrayNode.

private String arrayNode(String index, CQLTermNode node, CqlModifiers modifiers, List<Modifier> relationModifiers, Index schemaIndex, IndexTextAndJsonValues incomingvals, Table targetTable) throws QueryValidationException {
    StringBuilder sqlAnd = new StringBuilder();
    StringBuilder sqlOr = new StringBuilder();
    // avoid recursion
    modifiers.setRelationModifiers(new LinkedList<>());
    for (Modifier relationModifier : relationModifiers) {
        final String modifierName = relationModifier.getType().substring(1);
        final String modifierValue = relationModifier.getValue();
        String foundModifier = lookupModifier(schemaIndex, modifierName);
        if (foundModifier == null) {
            throw new QueryValidationException("CQL: Unsupported relation modifier " + relationModifier.getType());
        }
        if (modifierValue == null) {
            if (sqlOr.length() == 0) {
                sqlOr.append("(");
            } else {
                sqlOr.append(" or ");
            }
            IndexTextAndJsonValues vals = new IndexTextAndJsonValues();
            vals.setIndexText(SqlUtil.Cql2PgUtil.cqlNameAsSqlText("t.c", foundModifier));
            sqlOr.append(indexNode(index, this.dbTable, node, vals, modifiers));
        } else {
            final String comparator = relationModifier.getComparison();
            if (!"=".equals(comparator)) {
                throw new QueryValidationException("CQL: Unsupported comparison for relation modifier " + relationModifier.getType());
            }
            sqlAnd.append(" and ");
            sqlAnd.append(queryByFt(SqlUtil.Cql2PgUtil.cqlNameAsSqlText("t.c", foundModifier), modifierValue, comparator, schemaIndex, targetTable));
        }
    }
    if (sqlOr.length() > 0) {
        sqlOr.append(")");
    } else {
        String modifiersSubfield = null;
        if (schemaIndex != null) {
            modifiersSubfield = schemaIndex.getArraySubfield();
        }
        if (modifiersSubfield == null) {
            throw new QueryValidationException("CQL: No arraySubfield defined for index " + index);
        }
        IndexTextAndJsonValues vals = new IndexTextAndJsonValues();
        vals.setIndexText(SqlUtil.Cql2PgUtil.cqlNameAsSqlText("t.c", modifiersSubfield));
        sqlOr.append(indexNode(index, this.dbTable, node, vals, modifiers));
    }
    return "id in (select t.id" + " from (select id as id, " + "             jsonb_array_elements(" + incomingvals.getIndexJson() + ") as c" + "      ) as t" + " where " + sqlOr.toString() + sqlAnd.toString() + ")";
}

Example 3 with Modifier

use of org.z3950.zing.cql.Modifier in project okapi by folio-org.

the class CQLUtil method reduceBoolean.

private static CQLNode reduceBoolean(CQLBooleanNode n1, CQLTermNode tn, Comparator<CQLTermNode> cmp) {
    CQLNode n2 = null;
    CQLNode left = reducer(n1.getLeftOperand(), tn, cmp);
    CQLNode right = reducer(n1.getRightOperand(), tn, cmp);
    ModifierSet mSet = new ModifierSet(n1.getOperator().toString().toLowerCase());
    List<Modifier> mods = n1.getModifiers();
    for (Modifier m : mods) {
        mSet.addModifier(m.getType(), m.getComparison(), m.getValue());
    }
    if (left == null) {
        n2 = right;
    } else if (right == null) {
        n2 = left;
    }
    switch(n1.getOperator()) {
        case AND:
            if (left != null && right != null) {
                n2 = new CQLAndNode(left, right, mSet);
            }
            break;
        case OR:
            if (left != null && right != null) {
                n2 = new CQLOrNode(left, right, mSet);
            }
            break;
        case NOT:
            if (left != null && right != null) {
                n2 = new CQLNotNode(left, right, mSet);
            }
            break;
        case PROX:
            if (left != null && right != null) {
                n2 = new CQLProxNode(left, right, mSet);
            }
            break;
    }
    return n2;
}

Example 4 with Modifier

use of org.z3950.zing.cql.Modifier in project raml-module-builder by folio-org.

the class CQL2PgJSON method queryByFt.

/**
 * Create an SQL expression using Full Text query syntax.
 *
 * @param hasIndex
 * @param vals
 * @param node
 * @param comparator
 * @param modifiers
 * @return
 * @throws QueryValidationException
 */
private String queryByFt(String index, DbIndex dbIndex, IndexTextAndJsonValues vals, CQLTermNode node, String comparator, CqlModifiers modifiers, Table targetTable) throws QueryValidationException {
    final String indexText = vals.getIndexText();
    if (CqlAccents.RESPECT_ACCENTS == modifiers.getCqlAccents()) {
        logger.log(Level.WARNING, "Ignoring /respectAccents modifier for FT search {0}", indexText);
    }
    if (CqlCase.RESPECT_CASE == modifiers.getCqlCase()) {
        logger.log(Level.WARNING, "Ignoring /respectCase modifier for FT search {0}", indexText);
    }
    // Clean the term. Remove stand-alone ' *', not valid word.
    String term = node.getTerm().replaceAll(" +\\*", "").trim();
    Index schemaIndex = null;
    if (targetTable != null) {
        schemaIndex = DbSchemaUtils.getIndex(index, targetTable.getFullTextIndex());
    }
    String sql = queryByFt(indexText, term, comparator, schemaIndex, targetTable);
    // array modifier
    List<Modifier> relationModifiers = modifiers.getRelationModifiers();
    if (!relationModifiers.isEmpty()) {
        sql += " AND " + arrayNode(index, node, modifiers, relationModifiers, schemaIndex, vals, targetTable);
    }
    if (schemaIndex != null && schemaIndex.isCaseSensitive()) {
        throw new CQLFeatureUnsupportedException("full text index does not support case sensitive: " + index);
    }
    if (!dbIndex.hasFullTextIndex() && !"true".equals(sql)) {
        String s = String.format("%s, CQL >>> SQL: %s >>> %s", indexText, node.toCQL(), sql);
        logger.log(Level.WARNING, "Doing FT search without index for {0}", s);
    }
    return sql;
}