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349 lines (335 loc) · 10.1 KB
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function getParseSpecialCharacter() {
// 特殊字符字典
const directory = ['(', ')', '（', '）', ',', '，'];
const res = {};
directory.forEach((item, index) => {
res[item] = `$${index}`
});
return res;
}
function parseSpecialCharacter(str) {
const directory = getParseSpecialCharacter();
for (let key in directory) {
const replaceValue = directory[key];
const pattern = new RegExp(`\\${key}`, 'g');
// eslint-disable-next-line
while (pattern.test(str)) {
str = str.replace(pattern, replaceValue);
}
}
return str;
}
function parseCondition(filterCondition, keys) {
const str = filterCondition.replace(/&|\||>|<|=|!/g, ' ');
const arr = str.split(' ').filter((item) => item);
let result = filterCondition;
arr.forEach((item) => {
const key = keys.find((val) => val === item);
if (startsWithNumber(item) && key) {
result = result.replace(key, '$' + key);
}
if (key) {
const res = parseSpecialCharacter(key);
result = result.replace(key, res);
}
});
return result;
}
// 处理jsonsqlfeature, 加前缀
function parseConditionFeature(feature) {
let copyValue = {};
for (let key in feature) {
let copyKey = key;
if (startsWithNumber(key)) {
copyKey = '$' + key;
}
copyKey = parseSpecialCharacter(copyKey);
copyValue[copyKey] = feature[key];
}
return copyValue;
}
function startsWithNumber(str) {
return /^\d/.test(str);
}
// 要判断一下是否是二维数组的filter
function isSimpleComparison(filter) {
if (!filter || !Array.isArray(filter)) {
return false;
}
const [operator, ...operands] = filter;
const simpleOps = ['==', '!=', '>', '>=', '<', '<=', 'in', '!in', 'has', '!has'];
const logicalOps = ['all', 'any', 'none'];
if (simpleOps.includes(operator)) {
// has / !has：只要求一个字段名
if (operator === 'has' || operator === '!has') {
// 排除这种： ['has', ['get', 'name']]
return typeof operands[0] === 'string';
}
// in / !in：field + 至少一个值
if (operator === 'in' || operator === '!in') {
if (typeof operands[0] !== 'string') { return false; }
return operands.length > 1;
}
// 普通比较：field + value
return operands.length === 2 && typeof operands[0] === 'string';
}
if (logicalOps.includes(operator)) {
if (operands.length === 0) { return false; }
return operands.every((item) => isSimpleComparison(item));
}
return false;
}
// 处理类似"O'Reilly"这种字符串，在SQL语句中需要转，单引号需要处理
function formatValue(value) {
if (typeof value === 'string') {
return `'${value.replace(/'/g, "''")}'`;
}
return String(value);
}
// 判断空值
function isNullvalue(value) {
return [null, '', undefined].includes(value);
}
function mapboxFilterToCqlFilter(filter, dataType) {
if (!isSimpleComparison(filter)) {
return '';
}
const [operator, ...operands] = filter;
const field = dataType === 'STRUCTURE_DATA' ? `"${operands[0]}"` : operands[0];
let value;
switch (operator) {
case '>':
case '>=':
case '<':
case '<=': {
value = operands[1];
return `${field} ${operator} ${formatValue(value)}`;
}
case '==': {
value = operands[1];
if (isNullvalue(value)) {
return `${field} IS NULL`;
}
return `${field} = ${formatValue(value)}`;
}
case '!=': {
value = operands[1];
if (isNullvalue(value)) {
return `${field} IS NOT NULL`;
}
return `${field} <> ${formatValue(value)}`;
}
case 'in': {
const values = operands.slice(1);
return `${field} IN (${values.map((v) => formatValue(v)).join(', ')})`;
}
case '!in': {
const values = operands.slice(1);
return `${field} NOT IN (${values.map((v) => formatValue(v)).join(', ')})`;
}
// TODO
// case 'has': {
// const field = operands[0];
// return tableFieldNames?.includes(field) ? '1=1' : '1=0';
// }
// case '!has': {
// const field = operands[0];
// return tableFieldNames?.includes(field) ? '1=0' : '1=1';
// }
case 'all': {
return operands
.map((item) => mapboxFilterToCqlFilter(item, dataType))
.filter(Boolean)
.map((item) => `${item}`)
.join(' AND ');
}
case 'any': {
return operands
.map((item) => mapboxFilterToCqlFilter(item, dataType))
.filter(Boolean)
.map((item) => `(${item})`)
.join(' OR ');
}
case 'none': {
return operands
.map((item) => mapboxFilterToCqlFilter(item, dataType))
.filter(Boolean)
.map((item) => `NOT (${item})`)
.join(' AND ');
}
default:
return '';
}
}
// 暂时不考虑WFS
// none的情况下，全部用Not一个一个包裹，会报错（应该是接口问题），反转即可
function negateComparison(filter) {
const op = filter[0];
const args = filter.slice(1);
switch (op) {
case '==':
return mapboxFilterToWfsFilter(['!=', ...args]);
case '!=':
return mapboxFilterToWfsFilter(['==', ...args]);
case '>':
return mapboxFilterToWfsFilter(['<=', ...args]);
case '>=':
return mapboxFilterToWfsFilter(['<', ...args]);
case '<':
return mapboxFilterToWfsFilter(['>=', ...args]);
case '<=':
return mapboxFilterToWfsFilter(['>', ...args]);
case 'in':
return mapboxFilterToWfsFilter(['!in', ...args]);
case '!in':
return mapboxFilterToWfsFilter(['in', ...args]);
// case 'has':
// return mapboxFilterToWfsFilter(['!has', ...args], fieldNames, tableFieldNames);
// case '!has':
// return mapboxFilterToWfsFilter(['has', ...args], fieldNames, tableFieldNames);
default:
return '';
}
}
function mapboxFilterToWfsFilterBody(filter) {
if (!isSimpleComparison(filter)) {
return '';
}
const [operator, ...operands] = filter;
const fieldRef = (field) => `<fes:ValueReference>${field}</fes:ValueReference>`;
const literal = (value) => `<fes:Literal>${value}</fes:Literal>`;
switch (operator) {
case '==': {
const [field, value] = operands;
if (isNullvalue(value)) {
return `
<fes:PropertyIsNull>
${fieldRef(field)}
</fes:PropertyIsNull>`;
}
return `
<fes:PropertyIsEqualTo>
${fieldRef(field)}
${literal(value)}
</fes:PropertyIsEqualTo>`;
}
case '!=': {
const [field, value] = operands;
if (isNullvalue(value)) {
return `
<fes:PropertyIsNotNull>
${fieldRef(field)}
</fes:PropertyIsNotNull>`;
}
return `
<fes:PropertyIsNotEqualTo>
${fieldRef(field)}
${literal(value)}
</fes:PropertyIsNotEqualTo>`;
}
case '>':
return `
<fes:PropertyIsGreaterThan>
${fieldRef(operands[0])}
${literal(operands[1])}
</fes:PropertyIsGreaterThan>`;
case '>=':
return `
<fes:PropertyIsGreaterThanOrEqualTo>
${fieldRef(operands[0])}
${literal(operands[1])}
</fes:PropertyIsGreaterThanOrEqualTo>`;
case '<':
return `
<fes:PropertyIsLessThan>
${fieldRef(operands[0])}
${literal(operands[1])}
</fes:PropertyIsLessThan>`;
case '<=':
return `
<fes:PropertyIsLessThanOrEqualTo>
${fieldRef(operands[0])}
${literal(operands[1])}
</fes:PropertyIsLessThanOrEqualTo>`;
case 'in': {
const field = operands[0];
const values = operands.slice(1);
return `
<fes:Or>${values
.map(
(v) => `
<fes:PropertyIsEqualTo>
${fieldRef(field)}
${literal(v)}
</fes:PropertyIsEqualTo>`
)
.join('')}</fes:Or>`;
}
case '!in': {
const field = operands[0];
const values = operands.slice(1);
return `
<fes:Not><fes:Or>${values
.map(
(v) => `
<fes:PropertyIsEqualTo>
${fieldRef(field)}
${literal(v)}
</fes:PropertyIsEqualTo>`
)
.join('')}</fes:Or></fes:Not>`;
}
// TODO,has条件暂时是用null判断，不准确
// case 'has': { ... }
// case '!has': { ... }
case 'all': {
const children = operands
.map((item) => mapboxFilterToWfsFilterBody(item).trim())
.filter(Boolean);
return children.length
? `
<fes:And>
${children.join('')}
</fes:And>`
: '';
}
case 'any': {
const children = operands
.map((item) => mapboxFilterToWfsFilterBody(item).trim())
.filter(Boolean);
return children.length
? `
<fes:Or>
${children.join('')}
</fes:Or>`
: '';
}
case 'none': {
const children = operands.map((item) => negateComparison(item).trim()).filter(Boolean);
return children.length
? `
<fes:And>
${children.join('')}
</fes:And>`
: '';
}
default:
return '';
}
}
function mapboxFilterToWfsFilter(filter) {
const body = mapboxFilterToWfsFilterBody(filter);
if (!body) { return ''; }
return `<fes:Filter>${body}
</fes:Filter>`;
}
function mapboxFilterToQueryFilter(filter, dataType, type = 'SQL') {
if (type === 'SQL') {
return mapboxFilterToCqlFilter(filter, dataType);
}
if (type === 'XML') {
return mapboxFilterToWfsFilter(filter);
}
return '';
}
export { parseCondition, parseConditionFeature, mapboxFilterToQueryFilter };